[PATCH] btrfs: initialize return variable

[trix]

From: Tom Rix <trix@xxxxxxxxxx>

Static analysis reports this problem
free-space-cache.c:3965:2: warning: Undefined or garbage value returned
  return ret;
  ^~~~~~~~~~

ret is set in the node handling loop.
Treat doing nothing as a success and initialize ret to 0.

Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
---
 fs/btrfs/free-space-cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index e54466fc101f..4806295116d8 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -3949,7 +3949,7 @@ static int cleanup_free_space_cache_v1(struct btrfs_fs_info *fs_info,
 {
 	struct btrfs_block_group *block_group;
 	struct rb_node *node;
-	int ret;
+	int ret = 0;
 
 	btrfs_info(fs_info, "cleaning free space cache v1");
 
-- 
2.26.3