KVM: nVMX: remove unnecessary vmwrite from L2->L1 vmexit

The POSTED_INTR_NV field is constant (though it differs between the vmcs01 and
vmcs02), there is no need to reload it on vmexit to L1.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/vmx.c

@@ -11339,9 +11339,6 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
 		 */
 		vmx_flush_tlb(vcpu, true);
 	}
-	/* Restore posted intr vector. */
-	if (nested_cpu_has_posted_intr(vmcs12))
-		vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR);
 
 	vmcs_write32(GUEST_SYSENTER_CS, vmcs12->host_ia32_sysenter_cs);
 	vmcs_writel(GUEST_SYSENTER_ESP, vmcs12->host_ia32_sysenter_esp);