Adding 'else' to reduce checking.

These two conditions are in conflict, adding 'else' to reduce checking.
Signed-off-by: Haiwei Li <lihaiwei@tencent.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/lapic.c

@@ -1571,9 +1571,9 @@ static void kvm_apic_inject_pending_timer_irqs(struct kvm_lapic *apic)
 	struct kvm_timer *ktimer = &apic->lapic_timer;
 
 	kvm_apic_local_deliver(apic, APIC_LVTT);
-	if (apic_lvtt_tscdeadline(apic))
+	if (apic_lvtt_tscdeadline(apic)) {
 		ktimer->tscdeadline = 0;
-	if (apic_lvtt_oneshot(apic)) {
+	} else if (apic_lvtt_oneshot(apic)) {
 		ktimer->tscdeadline = 0;
 		ktimer->target_expiration = 0;
 	}