KVM: x86: refactor pic setup in kvm_set_routing_entry

Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/irq_comm.c

@@ -297,14 +297,12 @@ int kvm_set_routing_entry(struct kvm *kvm,
 	case KVM_IRQ_ROUTING_IRQCHIP:
 		delta = 0;
 		switch (ue->u.irqchip.irqchip) {
-		case KVM_IRQCHIP_PIC_MASTER:
-			e->set = kvm_set_pic_irq;
-			max_pin = PIC_NUM_PINS;
-			break;
 		case KVM_IRQCHIP_PIC_SLAVE:
+			delta = 8;
+			/* fall through */
+		case KVM_IRQCHIP_PIC_MASTER:
 			e->set = kvm_set_pic_irq;
 			max_pin = PIC_NUM_PINS;
-			delta = 8;
 			break;
 		case KVM_IRQCHIP_IOAPIC:
 			max_pin = KVM_IOAPIC_NUM_PINS;