hwmon: (aht10) Unlock on error in aht10_read_values()

This error path needs to drop the lock before returning.

Fixes: afd018716398 ("hwmon: Add AHT10 Temperature and Humidity Sensor Driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YBD5Ro549hMJSnW4@mwandaSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/aht10.c

@@ -138,8 +138,10 @@ static int aht10_read_values(struct aht10_data *data)
 	mutex_lock(&data->lock);
 	if (aht10_polltime_expired(data)) {
 		res = i2c_master_send(client, cmd_meas, sizeof(cmd_meas));
-		if (res < 0)
+		if (res < 0) {
+			mutex_unlock(&data->lock);
 			return res;
+		}
 
 		usleep_range(AHT10_MEAS_DELAY,
 			     AHT10_MEAS_DELAY + AHT10_DELAY_EXTRA);