CHROMIUM: media: jpeg: fix jpegdec buffer and job finishing flow

1. fix jpegdec dst buffer setting
2. fix jpegdec job finish setting

BUG=b:376642442
TEST=meetcuj test
UPSTREAM-TASK=b:379040143

Signed-off-by: Kyrie Wu <kyrie.wu@mediatek.corp-partner.google.com>
Change-Id: Idc43fec842e058890d7045f4a6f21c538a71ecf9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/6172674


Commit-Queue: Fei Shao <fshao@chromium.org>
Tested-by: Fei Shao <fshao@chromium.org>
Reviewed-by: Hsin-Te Yuan <yuanhsinte@chromium.org>
Reviewed-by: Fei Shao <fshao@chromium.org>
Signed-off-by: Hubert Mazur <hmazur@google.com>