KVM: x86: simplify ept_misconfig

Calling handle_mmio_page_fault() has been unnecessary since commit
e9ee956e311d ("KVM: x86: MMU: Move handle_mmio_page_fault() call to
kvm_mmu_page_fault()", 2016-02-22).

handle_mmio_page_fault() can now be made static.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index df8d2f1..45fb0ea 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6410,17 +6410,10 @@
 		return kvm_skip_emulated_instruction(vcpu);
 	}
 
-	ret = handle_mmio_page_fault(vcpu, gpa, true);
 	vcpu->arch.gpa_available = true;
-	if (likely(ret == RET_MMIO_PF_EMULATE))
-		return x86_emulate_instruction(vcpu, gpa, 0, NULL, 0) ==
-					      EMULATE_DONE;
-
-	if (unlikely(ret == RET_MMIO_PF_INVALID))
-		return kvm_mmu_page_fault(vcpu, gpa, 0, NULL, 0);
-
-	if (unlikely(ret == RET_MMIO_PF_RETRY))
-		return 1;
+	ret = kvm_mmu_page_fault(vcpu, gpa, PFERR_RSVD_MASK, NULL, 0);
+	if (ret >= 0)
+		return ret;
 
 	/* It is the real ept misconfig */
 	WARN_ON(1);