KVM: x86: refactor pic setup in kvm_set_routing_entry

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 6c01916..1dfeb18 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -297,15 +297,13 @@ int kvm_set_routing_entry(struct kvm *kvm,
 	case KVM_IRQ_ROUTING_IRQCHIP:
 		delta = 0;
 		switch (ue->u.irqchip.irqchip) {
+		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;
 			break;
-		case KVM_IRQCHIP_PIC_SLAVE:
-			e->set = kvm_set_pic_irq;
-			max_pin = PIC_NUM_PINS;
-			delta = 8;
-			break;
 		case KVM_IRQCHIP_IOAPIC:
 			max_pin = KVM_IOAPIC_NUM_PINS;
 			e->set = kvm_set_ioapic_irq;