In function flr_work, we should do gpu recovery when no job
is running. Fix the logic by inverting it.

v2: modify the description
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NLiu ChengZhe <ChengZhe.Liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>