net: sfc: remove unnecessary pci_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/efx.c

@@ -2643,7 +2643,6 @@ static void efx_pci_remove(struct pci_dev *pci_dev)
 	netif_dbg(efx, drv, efx->net_dev, "shutdown successful\n");
 
 	efx_fini_struct(efx);
-	pci_set_drvdata(pci_dev, NULL);
 	free_netdev(efx->net_dev);
 
 	pci_disable_pcie_error_reporting(pci_dev);
@@ -2837,7 +2836,6 @@ static int efx_pci_probe(struct pci_dev *pci_dev,
  fail2:
 	efx_fini_struct(efx);
  fail1:
-	pci_set_drvdata(pci_dev, NULL);
 	WARN_ON(rc > 0);
 	netif_dbg(efx, drv, efx->net_dev, "initialisation failed. rc=%d\n", rc);
 	free_netdev(net_dev);