hwmon: (ftsteutates) Fix clearing alarm sysfs entries

sysfs store functions should return the number of bytes written.
Returning zero results in an endless loop.

Fixes: 08426eda58 ("hwmon: Add driver for FTS BMC chip "Teutates"")
Signed-off-by: Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>
[groeck: Clean up documentation change and description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/ftsteutates.c

@@ -435,6 +435,7 @@ clear_temp_alarm(struct device *dev, struct device_attribute *devattr,
 		goto error;
 
 	data->valid = false;
+	ret = count;
 error:
 	mutex_unlock(&data->update_lock);
 	return ret;
@@ -508,6 +509,7 @@ clear_fan_alarm(struct device *dev, struct device_attribute *devattr,
 		goto error;
 
 	data->valid = false;
+	ret = count;
 error:
 	mutex_unlock(&data->update_lock);
 	return ret;