scsi: fnic: Fix use of uninitialized value in debug message

The oxid variable in fdls_process_abts_req() was only being initialized
inside the if (tport) block, but was being used in a debug print statement
after that block. If tport was NULL, oxid would remain uninitialized.  Move
the oxid initialization to happen at declaration using
FNIC_STD_GET_OX_ID(fchdr).

Fixes: f828af44 ("scsi: fnic: Add support for unsolicited requests and responses")
Closes: https://scan7.scan.coverity.com/#/project-view/52337/11354?selectedIssue=1602772


Signed-off-by: Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@gmail.com>
Link: https://lore.kernel.org/r/20250108050916.52721-1-dheeraj.linuxdev@gmail.com


Reviewed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>