memstick: rtsx_usb_ms: Add missing pm_runtime_disable() in probe function

If the probe fails, we should use pm_runtime_disable() to balance
pm_runtime_enable().

Add missing pm_runtime_disable() for rtsx_usb_ms.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/memstick/host/rtsx_usb_ms.c

@@ -770,6 +770,7 @@ static int rtsx_usb_ms_drv_probe(struct platform_device *pdev)
 	return 0;
 err_out:
 	memstick_free_host(msh);
+	pm_runtime_disable(ms_dev(host));
 	return err;
 }