media: tegra-vde: Use vb2_find_buffer

Use the newly introduced vb2_find_buffer API to get a vb2_buffer
given a buffer timestamp.

Cc: Dmitry Osipenko <[e-mail]>
Signed-off-by: Ezequiel Garcia <[e-mail]>
Acked-by: Tomasz Figa <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/nvidia/tegra-vde/h264.c

···
 {
 	const struct v4l2_h264_dpb_entry *dpb = ctx->h264.decode_params->dpb;
 	struct vb2_queue *cap_q = &ctx->fh.m2m_ctx->cap_q_ctx.q;
-	int buf_idx = -1;
+	struct vb2_buffer *vb = NULL;
 
 	if (dpb[dpb_idx].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)
-		buf_idx = vb2_find_timestamp(cap_q,
-					     dpb[dpb_idx].reference_ts, 0);
+		vb = vb2_find_buffer(cap_q, dpb[dpb_idx].reference_ts);
 
 	/*
 	 * If a DPB entry is unused or invalid, address of current destination
 	 * buffer is returned.
 	 */
-	if (buf_idx < 0)
+	if (!vb)
 		return &dst->vb2_buf;
 
-	return vb2_get_buffer(cap_q, buf_idx);
+	return vb;
 }
 
 static int tegra_vde_validate_vb_size(struct tegra_ctx *ctx,