sched: bugfix setscheduler unlock cpuset_rwsem

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4BUSF
CVE: NA

--------------------------------
Signed-off-by: NZheng Zucheng <zhengzucheng@huawei.com>
Reviewed-by: NChen Hui <judy.chenhui@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

kernel/sched/core.c

@@ -5552,8 +5552,8 @@ static int __sched_setscheduler(struct task_struct *p,
 	 * isolation will be invalid, so return -EINVAL in this case.
 	 */
 	if (unlikely(task_group(p)->qos_level == -1 && !idle_policy(policy))) {
-		task_rq_unlock(rq, p, &rf);
-		return -EINVAL;
+		retval = -EINVAL;
+		goto unlock;
 	}
 #endif