scsi: megaraid_sas: Simplify megasas_update_device_list

Remove unnecessary dcmd_ret check and goto statement.

Link: https://lore.kernel.org/r/1663145283-4872-4-git-send-email-kanie@linux.alibaba.com


Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>