selftests/kvm: make platform_info_test pass on AMD

test_msr_platform_info_disabled() generates EXIT_SHUTDOWN but VMCB state
is undefined after that so an attempt to launch this guest again from
test_msr_platform_info_enabled() fails. Reorder the tests to make test
pass.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/x86_64/platform_info_test.c

@@ -99,8 +99,8 @@ int main(int argc, char *argv[])
 	msr_platform_info = vcpu_get_msr(vm, VCPU_ID, MSR_PLATFORM_INFO);
 	vcpu_set_msr(vm, VCPU_ID, MSR_PLATFORM_INFO,
 		msr_platform_info | MSR_PLATFORM_INFO_MAX_TURBO_RATIO);
-	test_msr_platform_info_disabled(vm);
 	test_msr_platform_info_enabled(vm);
+	test_msr_platform_info_disabled(vm);
 	vcpu_set_msr(vm, VCPU_ID, MSR_PLATFORM_INFO, msr_platform_info);
 
 	kvm_vm_free(vm);