mfd: cros_ec: Simplify and clean-up cros_ec_dev_init()

Simplify cros_ec_dev_init() by the following changes:
- Get rid of label `failed_devreg`.
- Remove a redundant space and comment.
- Use `if (ret)` instead of `if (ret < 0)`.
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20240819102326.5235-1-tzungbi@kernel.orgSigned-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/cros_ec_dev.c

@@ -359,16 +359,11 @@ static int __init cros_ec_dev_init(void)
 		return ret;
 	}
 
-	/* Register the driver */
 	ret = platform_driver_register(&cros_ec_dev_driver);
-	if (ret < 0) {
+	if (ret) {
 		pr_warn(CROS_EC_DEV_NAME ": can't register driver: %d\n", ret);
-		goto failed_devreg;
-	}
-	return 0;
-
-failed_devreg:
 		class_unregister(&cros_class);
+	}
 	return ret;
 }