ionic: call ionic_port_init after fw-upgrade

Since the fw has been re-inited, we need to refresh the port
information dma address so we can see fresh port information.
Let's call ionic_port_init again, and tweak it to allow for
a call to simply refresh the existing dma address.

Fixes: c672412f ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/pensando/ionic/ionic_lif.c

@@ -2118,6 +2118,7 @@ static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
 	dev_info(ionic->dev, "FW Up: restarting LIFs\n");
 
 	ionic_init_devinfo(ionic);
+	ionic_port_init(ionic);
 	err = ionic_qcqs_alloc(lif);
 	if (err)
 		goto err_out;

drivers/net/ethernet/pensando/ionic/ionic_main.c

@@ -509,16 +509,16 @@ int ionic_port_init(struct ionic *ionic)
 	size_t sz;
 	int err;
 
-	if (idev->port_info)
-		return 0;
-
-	idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
-	idev->port_info = dma_alloc_coherent(ionic->dev, idev->port_info_sz,
-					     &idev->port_info_pa,
-					     GFP_KERNEL);
 	if (!idev->port_info) {
-		dev_err(ionic->dev, "Failed to allocate port info, aborting\n");
-		return -ENOMEM;
+		idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
+		idev->port_info = dma_alloc_coherent(ionic->dev,
+						     idev->port_info_sz,
+						     &idev->port_info_pa,
+						     GFP_KERNEL);
+		if (!idev->port_info) {
+			dev_err(ionic->dev, "Failed to allocate port info\n");
+			return -ENOMEM;
+		}
 	}
 
 	sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));