diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 3dd0693bad78..ba0fee7c3237 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1510,11 +1510,9 @@ int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
 						iterate, ctx);
 		}
 		ulist_free(roots);
-		roots = NULL;
 	}
 
 	free_leaf_list(refs);
-	ulist_free(roots);
 out:
 	if (!search_commit_root) {
 		btrfs_put_tree_mod_seq(fs_info, &tree_mod_seq_elem);