drm/scheduler: fix last_scheduled handling

Make sure we access last_scheduled only after checking that there are no
more jobs on the entity.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed