media: aspeed: fix an incorrect return code on buffer allocation failure

It returns '0' even when a failure happens on jpeg buffer allocation
so this commit fixes the issue.

Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
index f899ac3..94f97d9 100644
--- a/drivers/media/platform/aspeed-video.c
+++ b/drivers/media/platform/aspeed-video.c
@@ -1624,6 +1624,7 @@
 	if (!aspeed_video_alloc_buf(video, &video->jpeg,
 				    VE_JPEG_HEADER_SIZE)) {
 		dev_err(dev, "Failed to allocate DMA for JPEG header\n");
+		rc = -ENOMEM;
 		goto err_release_reserved_mem;
 	}