hwmon: (ltc4261) fix coccinelle warnings

drivers/hwmon/ltc4261.c:243:1-3: WARNING: PTR_RET can be used

Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: coccinelle/api/ptr_ret.cocci

CC: Guenter Roeck <[e-mail]>
Signed-off-by: Fengguang Wu <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>

drivers/hwmon/ltc4261.c

···
 	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
 							   data,
 							   ltc4261_groups);
-	if (IS_ERR(hwmon_dev))
-		return PTR_ERR(hwmon_dev);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
 static const struct i2c_device_id ltc4261_id[] = {