KVM: PPC: Book3S: PR: Indicate we're out of guest mode

When going out of guest mode, indicate that we are in vcpu->mode. That way
requests from other CPUs don't needlessly need to kick us to process them,
because it'll just happen next time we enter the guest.

Signed-off-by: Alexander Graf <agraf@suse.de>

arch/powerpc/kvm/book3s_pr.c

@@ -1152,6 +1152,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 #endif
 
 out:
+	vcpu->mode = OUTSIDE_GUEST_MODE;
 	preempt_enable();
 	return ret;
 }