KVM: VMX: Fix locking order in handle_invalid_guest_state

Release and re-acquire preemption and IRQ lock in the same order as
vcpu_enter_guest does.

Signed-off-by: Jan Kiszka <[e-mail]>
Signed-off-by: Marcelo Tosatti <[e-mail]>
Signed-off-by: Avi Kivity <[e-mail]>

arch/x86/kvm/vmx.c

···
 	struct vcpu_vmx *vmx = to_vmx(vcpu);
 	enum emulation_result err = EMULATE_DONE;
 
-	preempt_enable();
 	local_irq_enable();
+	preempt_enable();
 
 	while (!guest_state_valid(vcpu)) {
 		err = emulate_instruction(vcpu, kvm_run, 0, 0, 0);
···
 			schedule();
 	}
 
-	local_irq_disable();
 	preempt_disable();
+	local_irq_disable();
 
 	vmx->invalid_state_emulation_result = err;
 }