scsi: core: Add passthrough tests for success and no failure definitions

scsi: core: Add passthrough tests for success and no failure definitions

This patch adds scsi_check_passthrough() tests for the cases where a
command completes successfully and when the command failed but the caller
did not pass in a list of failures.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20250113180757.16691-1-michael.christie@oracle.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>