power_supply: 88pm860x_charger: Decrement the power supply's device reference counter

Use power_supply_put() to decrement the power supply's device reference
counter.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Pavel Machek <[e-mail]>
Reviewed-by: Bartlomiej Zolnierkiewicz <[e-mail]>
Reviewed-by: Sebastian Reichel <[e-mail]>
Signed-off-by: Sebastian Reichel <[e-mail]>

drivers/power/88pm860x_charger.c

···
 		return -EINVAL;
 	ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW,
 			&data);
-	if (ret)
+	if (ret) {
+		power_supply_put(psy);
 		return ret;
+	}
 	vbatt = data.intval / 1000;
 
 	ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_PRESENT, &data);
-	if (ret)
+	if (ret) {
+		power_supply_put(psy);
 		return ret;
+	}
+	power_supply_put(psy);
 
 	mutex_lock(&info->lock);
 	info->present = data.intval;
···
 
 	set_charging_fsm(info);
 out:
+	power_supply_put(psy);
 	return IRQ_HANDLED;
 }
 
···
 
 out:
 	mutex_unlock(&info->lock);
+	power_supply_put(psy);
 	dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);
 	set_charging_fsm(info);