kvm: nVMX: Remove nested_vmx_succeed after successful VM-entry

After a successful VM-entry, RFLAGS is cleared, with the exception of
bit 1, which is always set. This is handled by load_vmcs12_host_state.
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/vmx.c

@@ -11491,16 +11491,18 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason,
 	 */
 	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
 
+	if (unlikely(vmx->fail)) {
 		/*
-	 * Exiting from L2 to L1, we're now back to L1 which thinks it just
-	 * finished a VMLAUNCH or VMRESUME instruction, so we need to set the
-	 * success or failure flag accordingly.
+		 * After an early L2 VM-entry failure, we're now back
+		 * in L1 which thinks it just finished a VMLAUNCH or
+		 * VMRESUME instruction, so we need to set the failure
+		 * flag and the VM-instruction error field of the VMCS
+		 * accordingly.
 		 */
-	if (unlikely(vmx->fail)) {
 		vmx->fail = 0;
 		nested_vmx_failValid(vcpu, vm_inst_error);
-	} else
-		nested_vmx_succeed(vcpu);
+	}
+
 	if (enable_shadow_vmcs)
 		vmx->nested.sync_shadow_vmcs = true;