diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d0bbb05d4c08..d2285c9726e7 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -3368,6 +3368,7 @@ again:
 			 * alignment and size).
 			 */
 			ret = -EUCLEAN;
+			mutex_unlock(&fs_info->reclaim_bgs_lock);
 			goto error;
 		}