scsi: qedf: Add missing fc_disc_init call after allocating lport

When receiving an unsolicited frame we could crash on a list traversal in
fc_rport_lookup while searching the rport which is associated with our
lport.

Initialize the lport's discovery node after allocating the lport in
__qedf_probe().
Signed-off-by: Chad Dupuis <cdupuis@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qedf/qedf_main.c

@@ -3047,6 +3047,8 @@ static int __qedf_probe(struct pci_dev *pdev, int mode)
 			goto err0;
 		}
 
+		fc_disc_init(lport);
+
 		/* Initialize qedf_ctx */
 		qedf = lport_priv(lport);
 		qedf->lport = lport;