[PATCH] dm: remove unneeded variable 'sz'

[Yang Li]

Fix the following coccicheck warning:
./drivers/md/dm-ps-service-time.c:85:10-12: Unneeded variable: "sz".
Return "0" on line 105

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Yang Li <yang....@linux.alibaba.com>
---
 drivers/md/dm-ps-service-time.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/dm-ps-service-time.c b/drivers/md/dm-ps-service-time.c
index 9cfda66..12dd5ce 100644
--- a/drivers/md/dm-ps-service-time.c
+++ b/drivers/md/dm-ps-service-time.c
@@ -82,7 +82,6 @@ static void st_destroy(struct path_selector *ps)
 static int st_status(struct path_selector *ps, struct dm_path *path,
                     status_type_t type, char *result, unsigned maxlen)
 {
-       unsigned sz = 0;
        struct path_info *pi;
 
        if (!path)
@@ -102,7 +101,7 @@ static int st_status(struct path_selector *ps, struct 
dm_path *path,
                }
        }
 
-       return sz;
+       return 0;
 }
 
 static int st_add_path(struct path_selector *ps, struct dm_path *path,
-- 
1.8.3.1