alx: Drop redundant pci_enable_pcie_error_reporting()

pci_enable_pcie_error_reporting() enables the device to send ERR_*
Messages.  Since f26e58bf ("PCI/AER: Enable error reporting when AER is
native"), the PCI core does this for all devices during enumeration, so the
driver doesn't need to do it itself.

Remove the redundant pci_enable_pcie_error_reporting() call from the
driver.  Also remove the corresponding pci_disable_pcie_error_reporting()
from the driver .remove() path.

Note that this only controls ERR_* Messages from the device.  An ERR_*
Message may cause the Root Port to generate an interrupt, depending on the
AER Root Error Command register managed by the AER service driver.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Chris Snook <chris.snook@gmail.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/atheros/alx/main.c

@@ -39,7 +39,6 @@
 #include <linux/ipv6.h>
 #include <linux/if_vlan.h>
 #include <linux/mdio.h>
-#include <linux/aer.h>
 #include <linux/bitops.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
@@ -1745,7 +1744,6 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto out_pci_disable;
 	}
 
-	pci_enable_pcie_error_reporting(pdev);
 	pci_set_master(pdev);
 
 	if (!pdev->pm_cap) {
@@ -1879,7 +1877,6 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	free_netdev(netdev);
 out_pci_release:
 	pci_release_mem_regions(pdev);
-	pci_disable_pcie_error_reporting(pdev);
 out_pci_disable:
 	pci_disable_device(pdev);
 	return err;
@@ -1897,7 +1894,6 @@ static void alx_remove(struct pci_dev *pdev)
 	iounmap(hw->hw_addr);
 	pci_release_mem_regions(pdev);
 
-	pci_disable_pcie_error_reporting(pdev);
 	pci_disable_device(pdev);
 
 	mutex_destroy(&alx->mtx);