sched/core: Remove unused variable

Remove unused variable 'ret', and directly return 0.
Signed-off-by: NMuhammad Falak R Wani <falakreyaz@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1462441879-10092-1-git-send-email-falakreyaz@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

kernel/sched/core.c

@@ -8019,7 +8019,7 @@ static int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk)
 static int sched_rt_global_constraints(void)
 {
 	unsigned long flags;
-	int i, ret = 0;
+	int i;
 
 	raw_spin_lock_irqsave(&def_rt_bandwidth.rt_runtime_lock, flags);
 	for_each_possible_cpu(i) {
@@ -8031,7 +8031,7 @@ static int sched_rt_global_constraints(void)
 	}
 	raw_spin_unlock_irqrestore(&def_rt_bandwidth.rt_runtime_lock, flags);
 
-	return ret;
+	return 0;
 }
 #endif /* CONFIG_RT_GROUP_SCHED */