scsi: lpfc: Fix ndlp ref count for pt2pt mode issue RSCN

pt2pt ndlp ref count prematurely goes to 0. There was reference removed
that should only be removed if connected to a switch, not if in
point-to-point mode.

Add a mode check before the reference remove.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_els.c

@@ -2956,8 +2956,8 @@ lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
 	/* This will cause the callback-function lpfc_cmpl_els_cmd to
 	 * trigger the release of node.
 	 */
-
-	lpfc_nlp_put(ndlp);
+	if (!(vport->fc_flag & FC_PT2PT))
+		lpfc_nlp_put(ndlp);
 	return 0;
 }