autopackage: Put timing_finish() back in place

58674af0 accidently removed it so bring it back.

Change-Id: I48eed59830155a65f6803504950ac92026ff349d
Signed-off-by: Michal Berger <michal.berger@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24676


Reviewed-by: Mateusz Kozlowski <mateusz.kozlowski@solidigm.com>
Reviewed-by: Tomasz Zawadzki <tomasz@tzawadzki.com>
Reviewed-by: Pawel Piatek <pawelx.piatek@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>