rtc: rtc-rx8025: use devm_*() functions

Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/rtc/rtc-rx8025.c

···
 		goto errout;
 	}
 
-	rx8025 = kzalloc(sizeof(*rx8025), GFP_KERNEL);
+	rx8025 = devm_kzalloc(&client->dev, sizeof(*rx8025), GFP_KERNEL);
 	if (!rx8025) {
 		dev_err(&adapter->dev, "failed to alloc memory\n");
 		err = -ENOMEM;
···
 
 	err = rx8025_init_client(client, &need_reset);
 	if (err)
-		goto errout_free;
+		goto errout;
 
 	if (need_reset) {
 		struct rtc_time tm;
···
 		rx8025_set_time(&client->dev, &tm);
 	}
 
-	rx8025->rtc = rtc_device_register(client->name, &client->dev,
+	rx8025->rtc = devm_rtc_device_register(&client->dev, client->name,
 					  &rx8025_rtc_ops, THIS_MODULE);
 	if (IS_ERR(rx8025->rtc)) {
 		err = PTR_ERR(rx8025->rtc);
 		dev_err(&client->dev, "unable to register the class device\n");
-		goto errout_free;
+		goto errout;
 	}
 
 	if (client->irq > 0) {
···
 				  0, "rx8025", client);
 		if (err) {
 			dev_err(&client->dev, "unable to request IRQ\n");
-			goto errout_reg;
+			goto errout;
 		}
 	}
 
···
 errout_irq:
 	if (client->irq > 0)
 		free_irq(client->irq, client);
-
-errout_reg:
-	rtc_device_unregister(rx8025->rtc);
-
-errout_free:
-	kfree(rx8025);
 
 errout:
 	dev_err(&adapter->dev, "probing for rx8025 failed\n");
···
 	}
 
 	rx8025_sysfs_unregister(&client->dev);
-	rtc_device_unregister(rx8025->rtc);
-	kfree(rx8025);
 	return 0;
 }