pinctrl: msm: 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: Bjorn Andersson <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Lee Jones <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Reviewed-by: Bjorn Andersson <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/qcom/pinctrl-msm.c

···
 	msm_pinctrl_desc.name = dev_name(&pdev->dev);
 	msm_pinctrl_desc.pins = pctrl->soc->pins;
 	msm_pinctrl_desc.npins = pctrl->soc->npins;
-	pctrl->pctrl = pinctrl_register(&msm_pinctrl_desc, &pdev->dev, pctrl);
+	pctrl->pctrl = devm_pinctrl_register(&pdev->dev, &msm_pinctrl_desc,
+					     pctrl);
 	if (IS_ERR(pctrl->pctrl)) {
 		dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");
 		return PTR_ERR(pctrl->pctrl);
 	}
 
 	ret = msm_gpio_init(pctrl);
-	if (ret) {
-		pinctrl_unregister(pctrl->pctrl);
+	if (ret)
 		return ret;
-	}
 
 	platform_set_drvdata(pdev, pctrl);
 
···
 	struct msm_pinctrl *pctrl = platform_get_drvdata(pdev);
 
 	gpiochip_remove(&pctrl->chip);
-	pinctrl_unregister(pctrl->pctrl);
 
 	unregister_restart_handler(&pctrl->restart_nb);