[PATCH -next] blk-mq: Use BUG_ON() instead of BUG()

[Zou Wei]

Fixes coccicheck warning:

 block/blk-mq.c:546:2-5: WARNING: Use BUG_ON instead of if condition followed 
by BUG.

Fixes: 63151a449eba ("blk-mq: allow drivers to hook into I/O completion")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Zou Wei <zou_...@huawei.com>
---
 block/blk-mq.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index bcc3a23..49a227e 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -542,8 +542,7 @@ EXPORT_SYMBOL(__blk_mq_end_request);
 
 void blk_mq_end_request(struct request *rq, blk_status_t error)
 {
-       if (blk_update_request(rq, error, blk_rq_bytes(rq)))
-               BUG();
+       BUG_ON(blk_update_request(rq, error, blk_rq_bytes(rq)));
        __blk_mq_end_request(rq, error);
 }
 EXPORT_SYMBOL(blk_mq_end_request);
-- 
2.6.2