hwmon: (asus-ec-sensors) Add checks for devm_kcalloc

[ Upstream commit 9bdc112 ]

As the devm_kcalloc may return NULL, the return value needs to be checked
to avoid NULL poineter dereference.

Fixes: d0ddfd2 ("hwmon: (asus-ec-sensors) add driver for ASUS EC")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221125014329.121560-1-yuancan@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/hwmon/asus-ec-sensors.c

@@ -938,6 +938,8 @@ static int asus_ec_probe(struct platform_device *pdev)
 	ec_data->nr_sensors = hweight_long(ec_data->board_info->sensors);
 	ec_data->sensors = devm_kcalloc(dev, ec_data->nr_sensors,
 					sizeof(struct ec_sensor), GFP_KERNEL);
+	if (!ec_data->sensors)
+		return -ENOMEM;
 
 	status = setup_lock_data(dev);
 	if (status) {