sched: clean up the wakeup preempt check

clean up the wakeup preemption check. No code changed:

   text    data     bss     dec     hex filename
  44227    3326      36   47589    b9e5 sched.o.before
  44227    3326      36   47589    b9e5 sched.o.after
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/sched_fair.c

@@ -852,7 +852,9 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p)
 	if (unlikely(p->policy == SCHED_BATCH))
 		return;
 
-	if (sched_feat(WAKEUP_PREEMPT)) {
+	if (!sched_feat(WAKEUP_PREEMPT))
+		return;
+
 	while (!is_same_group(se, pse)) {
 		se = parent_entity(se);
 		pse = parent_entity(pse);
@@ -865,7 +867,6 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p)
 
 	if (delta > gran)
 		resched_task(curr);
-	}
 }
 
 static struct task_struct *pick_next_task_fair(struct rq *rq)