qcow2: Move error check of local_err near its assignment

The local_err check outside of the if block was necessary
when it was introduced in commit d1258dd0 because it needed to be
executed even if qcow2_load_autoloading_dirty_bitmaps() returned false.

After some modifications that all required the error check to remain
where it is, commit 9c98f145 finally moved the
qcow2_load_dirty_bitmaps() call into the if block, so now the error
check should be there, too.
Signed-off-by: NGuoyi Tu <tu.guoyi@h3c.com>
Reviewed-by: NVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

block/qcow2.c

@@ -1705,14 +1705,14 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
     if (!(bdrv_get_flags(bs) & BDRV_O_INACTIVE)) {
         /* It's case 1, 2 or 3.2. Or 3.1 which is BUG in management layer. */
         bool header_updated = qcow2_load_dirty_bitmaps(bs, &local_err);
+        if (local_err != NULL) {
+            error_propagate(errp, local_err);
+            ret = -EINVAL;
+            goto fail;
+        }
 
         update_header = update_header && !header_updated;
     }
-    if (local_err != NULL) {
-        error_propagate(errp, local_err);
-        ret = -EINVAL;
-        goto fail;
-    }
 
     if (update_header) {
         ret = qcow2_update_header(bs);