We leak local_err and don't report failure to the caller. It's
definitely wrong, let's fix.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Greg Kurz <gr...@kaod.org>
Reviewed-by: Alberto Garcia <be...@igalia.com>
---
 blockdev.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 84c5cde07c..753fb90c16 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1825,9 +1825,7 @@ static void drive_backup_prepare(BlkActionState *common, 
Error **errp)
     aio_context_acquire(aio_context);
 
     if (set_backing_hd) {
-        bdrv_set_backing_hd(target_bs, source, &local_err);
-        if (local_err) {
-            error_propagate(errp, local_err);
+        if (bdrv_set_backing_hd(target_bs, source, errp) < 0) {
             goto unref;
         }
     }
-- 
2.29.2


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