[Qemu-devel] [PATCH] nvme: Make nvme_init error handling code more readable

[Fam Zheng <famz@redhat.com>]

Coverity doesn't like the tests under fail label (report CID 1385847).
Reset the fields so the clean up order is more apparent.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
 block/nvme.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/block/nvme.c b/block/nvme.c
index 6f71122bf5..8239b920c8 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -560,6 +560,13 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
     qemu_co_queue_init(&s->dma_flush_queue);
     s->nsid = namespace;
     s->aio_context = bdrv_get_aio_context(bs);
+
+    /* Fields we've not touched should be zero-initialized by block layer
+     * already, but reset them anyway to make the error handling code easier to
+     * reason. */
+    s->regs = NULL;
+    s->vfio = NULL;
+
     ret = event_notifier_init(&s->irq_notifier, 0);
     if (ret) {
         error_setg(errp, "Failed to init event notifier");
-- 
2.14.3