Update job earlier with the scheduler it is supposed to be scheduled on.

Otherwise we could incorrectly optimize dependencies when moving an
entity from one scheduler to another.
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>