media: ti: cal: fix useless variable init

'ret' is initialized needlessly in cal_legacy_try_fmt_vid_cap(). We can
also move the variable to the for block, which is the only place where
it is used.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/ti/cal/cal-video.c

@@ -191,7 +191,7 @@ static int cal_legacy_try_fmt_vid_cap(struct file *file, void *priv,
 	struct cal_ctx *ctx = video_drvdata(file);
 	const struct cal_format_info *fmtinfo;
 	struct v4l2_subdev_frame_size_enum fse;
-	int ret, found;
+	int found;
 
 	fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
 	if (!fmtinfo) {
@@ -206,12 +206,13 @@ static int cal_legacy_try_fmt_vid_cap(struct file *file, void *priv,
 	f->fmt.pix.field = ctx->v_fmt.fmt.pix.field;
 
 	/* check for/find a valid width/height */
-	ret = 0;
 	found = false;
 	fse.pad = 0;
 	fse.code = fmtinfo->code;
 	fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 	for (fse.index = 0; ; fse.index++) {
+		int ret;
+
 		ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size,
 				       NULL, &fse);
 		if (ret)