drm/amdgpu/jpeg2: properly set atomics vmid field

commit e414a304 upstream.

This needs to be set as well if the IB uses atomics.

Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 35c62877)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>