media: gspca: remove redundant assignment to variable ret

The variable ret is being initialized with a value that
is never read and is being re-assigned a little later on. The
assignment is redundant and hence can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/usb/gspca/stv0680.c

@@ -35,7 +35,7 @@ struct sd {
 static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
 		       int size)
 {
-	int ret = -1;
+	int ret;
 	u8 req_type = 0;
 	unsigned int pipe = 0;