media: lm3646: remove redundant assignment to variable rval

The variable rval 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: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/lm3646.c

@@ -134,7 +134,7 @@ static int lm3646_set_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct lm3646_flash *flash = to_lm3646_flash(ctrl);
 	unsigned int reg_val;
-	int rval = -EINVAL;
+	int rval;
 
 	switch (ctrl->id) {
 	case V4L2_CID_FLASH_LED_MODE: