Fix CAN_MIGRATE_TASK macro to use p arg it gets

instead of tmp explicitly.

kernel/sched.c

@@ -591,7 +591,7 @@ static void load_balance(runqueue_t *this_rq, int idle)
 #define CAN_MIGRATE_TASK(p,rq,this_cpu)					\
 	((jiffies - (p)->sleep_timestamp > cache_decay_ticks) &&	\
 		((p) != (rq)->curr) &&					\
-			(tmp->cpus_allowed & (1 << (this_cpu))))
+			((p)->cpus_allowed & (1 << (this_cpu))))
 
 	if (!CAN_MIGRATE_TASK(tmp, busiest, this_cpu)) {
 		curr = curr->next;