pinctrl: Convert to devm_ioremap_resource()

Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.

devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/pinctrl/pinctrl-bcm2835.c b/drivers/pinctrl/pinctrl-bcm2835.c
index d347b9f..4eb6d2c 100644
--- a/drivers/pinctrl/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/pinctrl-bcm2835.c
@@ -959,9 +959,9 @@
 		return err;
 	}
 
-	pc->base = devm_request_and_ioremap(dev, &iomem);
-	if (!pc->base)
-		return -EADDRNOTAVAIL;
+	pc->base = devm_ioremap_resource(dev, &iomem);
+	if (IS_ERR(pc->base))
+		return PTR_ERR(pc->base);
 
 	pc->gpio_chip = bcm2835_gpio_chip;
 	pc->gpio_chip.dev = dev;