scsi: be2iscsi: Fix return value in mgmt_open_connection

mgmt_open_connection is expected to return tag not errno.

In error case, just return invalid tag 0.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/be2iscsi/be_mgmt.c

@@ -156,7 +156,7 @@ int mgmt_open_connection(struct beiscsi_hba *phba,
 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 			    "BG_%d : unknown addr family %d\n",
 			    dst_addr->sa_family);
-		return -EINVAL;
+		return 0;
 	}
 
 	phwi_ctrlr = phba->phwi_ctrlr;