As no one cares about the return value of blk_mq_tag_busy() and
__blk_mq_tag_busy(), so make them return void.

Other change is to simplify blk_mq_tag_idle().

Signed-off-by: Xianting Tian <redacted>
Reviewed-by: Ming Lei <redacted>
---
 block/blk-mq-tag.c |  4 ++--
 block/blk-mq-tag.h | 16 ++++++----------
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 9c92053e7..21ff7d156 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c

@@ -21,7 +21,7 @@
  * to get tag when first time, the other shared-tag users could reserve
  * budget for it.
  */
-bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
+void __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
 {
 	if (blk_mq_is_sbitmap_shared(hctx->flags)) {
 		struct request_queue *q = hctx->queue;

@@ -36,7 +36,7 @@ bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
 			atomic_inc(&hctx->tags->active_queues);
 	}
 
-	return true;
+	return;