[media] coda: fix mvcol buffer for MPEG4 decoding

The mvcol buffer is allocated at the end of the first internal buffer.
This patch fixes an out of bounds array access.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/coda/coda-bit.c

@@ -384,7 +384,7 @@ static int coda_alloc_framebuffers(struct coda_ctx *ctx,
 	/* mvcol buffer for mpeg4 */
 	if ((dev->devtype->product != CODA_DX6) &&
 	    (ctx->codec->src_fourcc == V4L2_PIX_FMT_MPEG4))
-		coda_parabuf_write(ctx, 97, ctx->internal_frames[i].paddr +
+		coda_parabuf_write(ctx, 97, ctx->internal_frames[0].paddr +
 					    ysize + ysize/4 + ysize/4);
 
 	return 0;