[PATCH v4 37/45] error: Reduce unnecessary error propagation

[Markus Armbruster <armbru@redhat.com>]

When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away, even when we need to keep error_propagate() for other
error paths.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 block.c             | 2 +-
 block/gluster.c     | 8 ++++----
 block/parallels.c   | 2 +-
 block/quorum.c      | 2 +-
 block/replication.c | 3 +--
 block/vxhs.c        | 4 ++--
 hw/core/qdev.c      | 2 +-
 hw/net/virtio-net.c | 4 ++--
 8 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/block.c b/block.c
index 60d2945c2c..2dcf9afd61 100644
--- a/block.c
+++ b/block.c
@@ -6073,7 +6073,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
 
     /* Parse -o options */
     if (options) {
-        if (!qemu_opts_do_parse(opts, options, NULL, &local_err)) {
+        if (!qemu_opts_do_parse(opts, options, NULL, errp)) {
             goto out;
         }
     }
diff --git a/block/gluster.c b/block/gluster.c
index c620880f27..4f1448e2bc 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -523,7 +523,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
 
     /* create opts info from runtime_json_opts list */
     opts = qemu_opts_create(&runtime_json_opts, NULL, 0, &error_abort);
-    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
+    if (!qemu_opts_absorb_qdict(opts, options, errp)) {
         goto out;
     }
 
@@ -554,7 +554,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
 
         /* create opts info from runtime_type_opts list */
         opts = qemu_opts_create(&runtime_type_opts, NULL, 0, &error_abort);
-        if (!qemu_opts_absorb_qdict(opts, backing_options, &local_err)) {
+        if (!qemu_opts_absorb_qdict(opts, backing_options, errp)) {
             goto out;
         }
 
@@ -584,7 +584,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
         if (gsconf->type == SOCKET_ADDRESS_TYPE_INET) {
             /* create opts info from runtime_inet_opts list */
             opts = qemu_opts_create(&runtime_inet_opts, NULL, 0, &error_abort);
-            if (!qemu_opts_absorb_qdict(opts, backing_options, &local_err)) {
+            if (!qemu_opts_absorb_qdict(opts, backing_options, errp)) {
                 goto out;
             }
 
@@ -632,7 +632,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
         } else {
             /* create opts info from runtime_unix_opts list */
             opts = qemu_opts_create(&runtime_unix_opts, NULL, 0, &error_abort);
-            if (!qemu_opts_absorb_qdict(opts, backing_options, &local_err)) {
+            if (!qemu_opts_absorb_qdict(opts, backing_options, errp)) {
                 goto out;
             }
 
diff --git a/block/parallels.c b/block/parallels.c
index ff27a85c01..180dd41e2b 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -828,7 +828,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
         goto fail_options;
     }
 
-    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
+    if (!qemu_opts_absorb_qdict(opts, options, errp)) {
         goto fail_options;
     }
 
diff --git a/block/quorum.c b/block/quorum.c
index 5d52e605db..6df9449fc2 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -921,7 +921,7 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
     }
 
     opts = qemu_opts_create(&quorum_runtime_opts, NULL, 0, &error_abort);
-    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
+    if (!qemu_opts_absorb_qdict(opts, options, errp)) {
         ret = -EINVAL;
         goto exit;
     }
diff --git a/block/replication.c b/block/replication.c
index dcd430624e..0c70215784 100644
--- a/block/replication.c
+++ b/block/replication.c
@@ -85,7 +85,6 @@ static int replication_open(BlockDriverState *bs, QDict *options,
 {
     int ret;
     BDRVReplicationState *s = bs->opaque;
-    Error *local_err = NULL;
     QemuOpts *opts = NULL;
     const char *mode;
     const char *top_id;
@@ -99,7 +98,7 @@ static int replication_open(BlockDriverState *bs, QDict *options,
 
     ret = -EINVAL;
     opts = qemu_opts_create(&replication_runtime_opts, NULL, 0, &error_abort);
-    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
+    if (!qemu_opts_absorb_qdict(opts, options, errp)) {
         goto fail;
     }
 
diff --git a/block/vxhs.c b/block/vxhs.c
index fecaeb82c9..dc0e254730 100644
--- a/block/vxhs.c
+++ b/block/vxhs.c
@@ -318,7 +318,7 @@ static int vxhs_open(BlockDriverState *bs, QDict *options,
     opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
     tcp_opts = qemu_opts_create(&runtime_tcp_opts, NULL, 0, &error_abort);
 
-    if (!qemu_opts_absorb_qdict(opts, options, &local_err)) {
+    if (!qemu_opts_absorb_qdict(opts, options, errp)) {
         ret = -EINVAL;
         goto out;
     }
@@ -345,7 +345,7 @@ static int vxhs_open(BlockDriverState *bs, QDict *options,
     /* get the 'server.' arguments */
     qdict_extract_subqdict(options, &backing_options, VXHS_OPT_SERVER".");
 
-    if (!qemu_opts_absorb_qdict(tcp_opts, backing_options, &local_err)) {
+    if (!qemu_opts_absorb_qdict(tcp_opts, backing_options, errp)) {
         ret = -EINVAL;
         goto out;
     }
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 17bd8fc2ec..62b45af8e9 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -869,7 +869,7 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
     }
 
     if (value && !dev->realized) {
-        if (!check_only_migratable(obj, &local_err)) {
+        if (!check_only_migratable(obj, errp)) {
             goto fail;
         }
 
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 04b012e487..7502ff0b1e 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -3119,8 +3119,8 @@ static bool failover_replug_primary(VirtIONet *n, Error **errp)
     qdev_set_parent_bus(n->primary_dev, n->primary_bus);
     n->primary_should_be_hidden = false;
     if (!qemu_opt_set_bool(n->primary_device_opts,
-                           "partially_hotplugged", true, &err)) {
-        goto out;
+                           "partially_hotplugged", true, errp)) {
+        return false;
     }
     hotplug_ctrl = qdev_get_hotplug_handler(n->primary_dev);
     if (hotplug_ctrl) {
-- 
2.26.2