[PATCH v2] migration/ram: Fix compilation with -Wshadow=local

[Thomas Huth <thuth@redhat.com>]

Rename the variable here to avoid that it shadows a variable from
the beginning of the function scope. With this change the code now
successfully compiles with -Wshadow=local.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 v2: Need the value for the qemu_file_set_error() line, too

 migration/ram.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/migration/ram.c b/migration/ram.c
index 92769902bb..212add4481 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3208,6 +3208,8 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
     rs->last_stage = !migration_in_colo_state();
 
     WITH_RCU_READ_LOCK_GUARD() {
+        int rdma_reg_ret;
+
         if (!migration_in_postcopy()) {
             migration_bitmap_sync_precopy(rs, true);
         }
@@ -3238,9 +3240,9 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
 
         ram_flush_compressed_data(rs);
 
-        int ret = rdma_registration_stop(f, RAM_CONTROL_FINISH);
-        if (ret < 0) {
-            qemu_file_set_error(f, ret);
+        rdma_reg_ret = rdma_registration_stop(f, RAM_CONTROL_FINISH);
+        if (rdma_reg_ret < 0) {
+            qemu_file_set_error(f, rdma_reg_ret);
         }
     }
 
-- 
2.41.0