watchdog: rc32434_wdt: use devm_ioremap_nocache() functions

Use devm_ioremap_nocache() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <[e-mail]>
Reviewed-by: Guenter Roeck <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

drivers/watchdog/rc32434_wdt.c

···
 #include <linux/platform_device.h>	/* For platform_driver framework */
 #include <linux/spinlock.h>		/* For spin_lock/spin_unlock/... */
 #include <linux/uaccess.h>		/* For copy_to_user/put_user/... */
+#include <linux/io.h>			/* For devm_ioremap_nocache */
 
 #include <asm/mach-rc32434/integ.h>	/* For the Watchdog registers */
 
···
 		return -ENODEV;
 	}
 
-	wdt_reg = ioremap_nocache(r->start, resource_size(r));
+	wdt_reg = devm_ioremap_nocache(&pdev->dev, r->start, resource_size(r));
 	if (!wdt_reg) {
 		pr_err("failed to remap I/O resources\n");
 		return -ENXIO;
···
 	ret = misc_register(&rc32434_wdt_miscdev);
 	if (ret < 0) {
 		pr_err("failed to register watchdog device\n");
-		goto unmap;
+		return ret;
 	}
 
 	pr_info("Watchdog Timer version " VERSION ", timer margin: %d sec\n",
 		timeout);
 
 	return 0;
-
-unmap:
-	iounmap(wdt_reg);
-	return ret;
 }
 
 static int rc32434_wdt_remove(struct platform_device *pdev)
 {
 	misc_deregister(&rc32434_wdt_miscdev);
-	iounmap(wdt_reg);
 	return 0;
 }