net: thunderx: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and simplify the code.
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cavium/thunder/nic_main.c

@@ -1311,9 +1311,8 @@ static int nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	err = pci_enable_device(pdev);
 	if (err) {
-		dev_err(dev, "Failed to enable PCI device\n");
 		pci_set_drvdata(pdev, NULL);
-		return err;
+		return dev_err_probe(dev, err, "Failed to enable PCI device\n");
 	}
 
 	err = pci_request_regions(pdev, DRV_NAME);

drivers/net/ethernet/cavium/thunder/nicvf_main.c

@@ -2119,10 +2119,8 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 
 	err = pci_enable_device(pdev);
-	if (err) {
-		dev_err(dev, "Failed to enable PCI device\n");
-		return err;
-	}
+	if (err)
+		return dev_err_probe(dev, err, "Failed to enable PCI device\n");
 
 	err = pci_request_regions(pdev, DRV_NAME);
 	if (err) {

drivers/net/ethernet/cavium/thunder/thunder_bgx.c

@@ -1597,9 +1597,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	err = pcim_enable_device(pdev);
 	if (err) {
-		dev_err(dev, "Failed to enable PCI device\n");
 		pci_set_drvdata(pdev, NULL);
-		return err;
+		return dev_err_probe(dev, err, "Failed to enable PCI device\n");
 	}
 
 	err = pci_request_regions(pdev, DRV_NAME);