KVM: arm64: nv: Release faulted-in VNCR page from mmu_lock critical section

The conversion to kvm_release_faultin_page() missed the requirement
for this to be called within a critical section with mmu_lock held
for write. Move this call up to satisfy this requirement.

Fixes: 069a05e ("KVM: arm64: nv: Handle VNCR_EL2-triggered faults")
Signed-off-by: Marc Zyngier <maz@kernel.org>

Author: Marc Zyngier

arch/arm64/kvm/nested.c

@@ -1228,9 +1228,9 @@ static int kvm_translate_vncr(struct kvm_vcpu *vcpu)
 		vt->cpu = -1;
 
 		kvm_make_request(KVM_REQ_MAP_L1_VNCR_EL2, vcpu);
+		kvm_release_faultin_page(vcpu->kvm, page, false, vt->wr.pw);
 	}
 
-	kvm_release_faultin_page(vcpu->kvm, page, false, vt->wr.pw);
 	if (vt->wr.pw)
 		mark_page_dirty(vcpu->kvm, gfn);