diff --git a/block/blk-iocost.c b/block/blk-iocost.c
index b82649c1440b..951ad4bb27f5 100644
--- a/block/blk-iocost.c
+++ b/block/blk-iocost.c
@@ -3405,7 +3405,7 @@ static int __init ioc_init(void)
 
 static void __exit ioc_exit(void)
 {
-	return blkcg_policy_unregister(&blkcg_policy_iocost);
+	blkcg_policy_unregister(&blkcg_policy_iocost);
 }
 
 module_init(ioc_init);
diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index f90429cf4edf..81be0096411d 100644
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -1046,7 +1046,7 @@ static int __init iolatency_init(void)
 
 static void __exit iolatency_exit(void)
 {
-	return blkcg_policy_unregister(&blkcg_policy_iolatency);
+	blkcg_policy_unregister(&blkcg_policy_iolatency);
 }
 
 module_init(iolatency_init);