KVM: x86: remove duplicate checks for ioapic

When handling KVM_GET_IRQCHIP, we already check irqchip_kernel(), which
implies a fully inititalized ioapic.

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/ioapic.c

@@ -645,8 +645,6 @@ void kvm_ioapic_destroy(struct kvm *kvm)
 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
 {
 	struct kvm_ioapic *ioapic = kvm->arch.vioapic;
-	if (!ioapic)
-		return -EINVAL;
 
 	spin_lock(&ioapic->lock);
 	memcpy(state, ioapic, sizeof(struct kvm_ioapic_state));
@@ -658,8 +656,6 @@ int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state)
 {
 	struct kvm_ioapic *ioapic = kvm->arch.vioapic;
-	if (!ioapic)
-		return -EINVAL;
 
 	spin_lock(&ioapic->lock);
 	memcpy(ioapic, state, sizeof(struct kvm_ioapic_state));