media: mediatek: vdec: Remove useless loop

Simplify code by removing useless loop by using video buffer index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c

@@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
 		return -EINVAL;
 
 	/* update internal buffer's width/height */
-	for (i = 0; i < vq->num_buffers; i++) {
-		if (vb == vq->bufs[i]) {
-			instance->dpb[i].width = w;
-			instance->dpb[i].height = h;
-			break;
-		}
-	}
+	instance->dpb[vb->index].width = w;
+	instance->dpb[vb->index].height = h;
 
 	/*
 	 * get buffer's width/height from instance