HID: hid-sensor-custom: Remove unused variable 'ret'

Fixes the following W=1 kernel build warning(s):

 drivers/hid/hid-sensor-custom.c: In function ‘store_value’:
 drivers/hid/hid-sensor-custom.c:400:7: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]

Cc: Jiri Kosina <[email protected]>
Cc: Jonathan Cameron <[email protected]>
Cc: Srinivas Pandruvada <[email protected]>
Cc: Benjamin Tissoires <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Lee Jones <[email protected]>
Acked-by: Jonathan Cameron <[email protected]>
Signed-off-by: Benjamin Tissoires <[email protected]>

Author: Lee Jones

drivers/hid/hid-sensor-custom.c

@@ -397,15 +397,14 @@ static ssize_t store_value(struct device *dev, struct device_attribute *attr,
 
 	if (!strncmp(name, "value", strlen("value"))) {
 		u32 report_id;
-		int ret;
 
 		if (kstrtoint(buf, 0, &value) != 0)
 			return -EINVAL;
 
 		report_id = sensor_inst->fields[field_index].attribute.
 								report_id;
-		ret = sensor_hub_set_feature(sensor_inst->hsdev, report_id,
-					     index, sizeof(value), &value);
+		sensor_hub_set_feature(sensor_inst->hsdev, report_id,
+				       index, sizeof(value), &value);
 	} else
 		return -EINVAL;