If pinctrl_register() fails probe will return with an error without locking
the RTC and disabling pm_runtime.
Set ret and jump to err instead.
Fixes: 97ea1906b3c2 ("rtc: omap: Support ext_wakeup configuration")
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
        rtc->pctldev = pinctrl_register(&rtc_pinctrl_desc, &pdev->dev, rtc);
        if (IS_ERR(rtc->pctldev)) {
                dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");
-               return PTR_ERR(rtc->pctldev);
+               ret = PTR_ERR(rtc->pctldev);
+               goto err;
        }
 
        return 0;