rtc: rx8025: switch to managed irq allocation

Use devm_request_threaded_irq() so it is not necessary to call free_irq()
explicitly.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-rx8025.c

@@ -554,8 +554,9 @@ static int rx8025_probe(struct i2c_client *client,
 
 	if (client->irq > 0) {
 		dev_info(&client->dev, "IRQ %d supplied\n", client->irq);
-		err = request_threaded_irq(client->irq, NULL, rx8025_handle_irq,
-				  0, "rx8025", client);
+		err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+						rx8025_handle_irq, 0, "rx8025",
+						client);
 		if (err) {
 			dev_err(&client->dev, "unable to request IRQ\n");
 			goto errout;
@@ -567,14 +568,10 @@ static int rx8025_probe(struct i2c_client *client,
 
 	err = rx8025_sysfs_register(&client->dev);
 	if (err)
-		goto errout_irq;
+		goto errout;
 
 	return 0;
 
-errout_irq:
-	if (client->irq > 0)
-		free_irq(client->irq, client);
-
 errout:
 	dev_err(&adapter->dev, "probing for rx8025 failed\n");
 	return err;
@@ -582,9 +579,6 @@ static int rx8025_probe(struct i2c_client *client,
 
 static int rx8025_remove(struct i2c_client *client)
 {
-	if (client->irq > 0)
-		free_irq(client->irq, client);
-
 	rx8025_sysfs_unregister(&client->dev);
 	return 0;
 }