power: supply: wm97xx: Use devm_kcalloc()

Instead of handling the memory allocation manually, use the automatic
`devres` variant `devm_kcalloc()`. This is less error prone and
eliminates the `goto`-path.

Signed-off-by: Waqar Hameed <waqar.hameed@axis.com>
Link: https://patch.msgid.link/5ac93f5b0fa417bb5d9e93b9302a18f2c04d4077.1769158280.git.waqar.hameed@axis.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Author: whame

drivers/power/supply/wm97xx_battery.c

@@ -192,7 +192,7 @@ static int wm97xx_bat_probe(struct platform_device *dev)
 	if (pdata->min_voltage >= 0)
 		props++;	/* POWER_SUPPLY_PROP_VOLTAGE_MIN */
 
-	prop = kcalloc(props, sizeof(*prop), GFP_KERNEL);
+	prop = devm_kcalloc(&dev->dev, props, sizeof(*prop), GFP_KERNEL);
 	if (!prop)
 		return -ENOMEM;
 
@@ -224,12 +224,10 @@ static int wm97xx_bat_probe(struct platform_device *dev)
 	bat_psy_desc.num_properties = props;
 
 	bat_psy = power_supply_register(&dev->dev, &bat_psy_desc, &cfg);
-	if (!IS_ERR(bat_psy)) {
-		schedule_work(&bat_work);
-	} else {
-		ret = PTR_ERR(bat_psy);
-		goto free;
-	}
+	if (IS_ERR(bat_psy))
+		return PTR_ERR(bat_psy);
+
+	schedule_work(&bat_work);
 
 	if (charge_gpiod) {
 		ret = request_irq(gpiod_to_irq(charge_gpiod), wm97xx_chrg_irq,
@@ -246,9 +244,6 @@ static int wm97xx_bat_probe(struct platform_device *dev)
 unregister:
 	power_supply_unregister(bat_psy);
 
-free:
-	kfree(prop);
-
 	return ret;
 }
 
@@ -258,7 +253,6 @@ static void wm97xx_bat_remove(struct platform_device *dev)
 		free_irq(gpiod_to_irq(charge_gpiod), dev);
 	cancel_work_sync(&bat_work);
 	power_supply_unregister(bat_psy);
-	kfree(prop);
 }
 
 static struct platform_driver wm97xx_bat_driver = {