scsi: qla2xxx: Use common routine to free fcport struct

This patch does not change any any functionality.

Link: https://lore.kernel.org/r/20191217220617.28084-8-hmadhani@marvell.com


Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>