[PATCH] __init in cfq-iosched.c

cfq_init() calls __init cfq_slab_setup and hence must be __init itself

also made it static

drivers/block/cfq-iosched.c

@@ -1819,7 +1819,7 @@ static struct elevator_type iosched_cfq = {
 	.elevator_owner =	THIS_MODULE,
 };
 
-int cfq_init(void)
+static int __init cfq_init(void)
 {
 	int ret;