pinctrl: pxa: Use devm_pinctrl_register() for pinctrl registration

Use devm_pinctrl_register() for pin control registration and clean
the error path.

Signed-off-by: Laxman Dewangan <[e-mail]>
Cc: Daniel Mack <[e-mail]>
Cc: Haojian Zhuang <[e-mail]>
Cc: Robert Jarzmik <[e-mail]>
Cc: [e-mail]
Acked-by: Robert Jarzmik <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pxa/pinctrl-pxa2xx.c

···
 	if (ret)
 		return ret;
 
-	pctl->pctl_dev = pinctrl_register(&pctl->desc, &pdev->dev, pctl);
+	pctl->pctl_dev = devm_pinctrl_register(&pdev->dev, &pctl->desc, pctl);
 	if (IS_ERR(pctl->pctl_dev)) {
 		dev_err(&pdev->dev, "couldn't register pinctrl driver\n");
 		return PTR_ERR(pctl->pctl_dev);