KVM: selftests: Use vm_create_without_vcpus() in dirty_log_test

Use vm_create_without_vcpus() instead of open coding a rough equivalent.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/dirty_log_test.c

@@ -674,11 +674,8 @@ static struct kvm_vm *create_vm(enum vm_guest_mode mode, uint32_t vcpuid,
 
 	pr_info("Testing guest mode: %s\n", vm_guest_mode_string(mode));
 
-	vm = __vm_create(mode, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages);
-	kvm_vm_elf_load(vm, program_invocation_name);
-#ifdef __x86_64__
-	vm_create_irqchip(vm);
-#endif
+	vm = vm_create_without_vcpus(mode, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages);
+
 	log_mode_create_vm_done(vm);
 	vm_vcpu_add_default(vm, vcpuid, guest_code);
 	return vm;