kmem_cache_destroy() is safe for NULL pointer as input, the NULL pointer
checking is unncessary. This patch just removes the NULL pointer checking
to make code simpler.

Signed-off-by: Coly Li <col...@suse.de>
Reviewed-by: Shenghui Wang <shh...@foxmail.com>
---
 drivers/md/bcache/request.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 55264e71369d..51be355a3309 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -1367,8 +1367,7 @@ void bch_flash_dev_request_init(struct bcache_device *d)
 
 void bch_request_exit(void)
 {
-       if (bch_search_cache)
-               kmem_cache_destroy(bch_search_cache);
+       kmem_cache_destroy(bch_search_cache);
 }
 
 int __init bch_request_init(void)
-- 
2.18.0

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