scsi: qedf: Remove dead code

If container_of() is used correctly, its result is never NULL. Remove the
code that depends on container_of() returning a NULL pointer.

Signed-off-by: Liao Chen <liaochen4@huawei.com>
Link: https://lore.kernel.org/r/20240921062956.2027563-1-liaochen4@huawei.com


Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>