media: pwc-ctl: remove redundant assignment to variable ret

The variable ret is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")

Signed-off-by: Colin Ian King <[e-mail]>
Reviewed-by: Ezequiel Garcia <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/pwc/pwc-ctrl.c

···
 #ifdef CONFIG_USB_PWC_DEBUG
 int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
 {
-	int ret = -1, request;
+	int ret, request;
 
 	if (pdev->type < 675)
 		request = SENSOR_TYPE_FORMATTER1;