[Qemu-stable] [PATCH] migration/block-dirty-bitmap: fix dirty_bitmap_load

[Vladimir Sementsov-Ogievskiy]

dirty_bitmap_load_header return code is obtained but not handled. Fix
this.

Bug was introduced in b35ebdf076d697bc
"migration: add postcopy migration of dirty bitmaps" with the whole
function.

Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
 migration/block-dirty-bitmap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
index 8819aabe3a..2c541c985d 100644
--- a/migration/block-dirty-bitmap.c
+++ b/migration/block-dirty-bitmap.c
@@ -672,6 +672,9 @@ static int dirty_bitmap_load(QEMUFile *f, void *opaque, int 
version_id)
 
     do {
         ret = dirty_bitmap_load_header(f, &s);
+        if (ret < 0) {
+            return ret;
+        }
 
         if (s.flags & DIRTY_BITMAP_MIG_FLAG_START) {
             ret = dirty_bitmap_load_start(f, &s);
-- 
2.11.1