scsi: lpfc: Fix NULL pointer reference when resetting adapter

Points referencing local port structures didn't accommodate cases where
the localport may not be registered yet.

Add NULL pointer checks to logic.
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_nvme.c

@@ -364,10 +364,11 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 	struct lpfc_dmabuf *buf_ptr;
 	struct lpfc_nodelist *ndlp;
 
-	lport = (struct lpfc_nvme_lport *)vport->localport->private;
 	pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
 	status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
 
+	if (vport->localport) {
+		lport = (struct lpfc_nvme_lport *)vport->localport->private;
 		if (lport) {
 			atomic_inc(&lport->fc4NvmeLsCmpls);
 			if (status) {
@@ -376,6 +377,7 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
 				atomic_inc(&lport->cmpl_ls_err);
 			}
 		}
+	}
 
 	ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
 	lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
@@ -980,6 +982,7 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
 	rport = lpfc_ncmd->nrport;
 	status = bf_get(lpfc_wcqe_c_status, wcqe);
 
+	if (vport->localport) {
 		lport = (struct lpfc_nvme_lport *)vport->localport->private;
 		if (lport) {
 			idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
@@ -991,6 +994,7 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
 				atomic_inc(&lport->cmpl_fcp_err);
 			}
 		}
+	}
 
 	lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n",
 			 lpfc_ncmd->cur_iocbq.sli4_xritag,