[PATCH] btrfs: fixed an incorrect variable assignment

[liujing]

In the btrfs_reclaim_bgs_work function, 
there is an assignment of int ret =0, 
but this assignment is not used in the following code, 
so it can be defined as int ret.

Signed-off-by: liujing <liujing@xxxxxxxxxxxxxxxxxxxx>
---
 fs/btrfs/block-group.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index c52b6e245b9a..a4c7fb423244 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -1571,7 +1571,7 @@ void btrfs_reclaim_bgs_work(struct work_struct *work)
 	list_sort(NULL, &fs_info->reclaim_bgs, reclaim_bgs_cmp);
 	while (!list_empty(&fs_info->reclaim_bgs)) {
 		u64 zone_unusable;
-		int ret = 0;
+		int ret;
 
 		bg = list_first_entry(&fs_info->reclaim_bgs,
 				      struct btrfs_block_group,
-- 
2.18.2