genirq: Remove redundant thread affinity setting

Thread affinity is already set by setup_affinity().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index dc95d53d..33a6ee0 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -309,8 +309,6 @@
 
 	raw_spin_lock_irqsave(&desc->lock, flags);
 	ret = setup_affinity(irq, desc, mask);
-	if (!ret)
-		irq_set_thread_affinity(desc);
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	return ret;
 }