cxl: remove unnecessary calling of pci_enable_pcie_error_reporting()

With this [1] commit upstream, pci_enable_pci_error_report() is no longer
necessary for the driver to call. Remove call and related cleanups.

[1]: f26e58bf ("PCI/AER: Enable error reporting when AER is native")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/167632012093.4153151.5360778069735064322.stgit@djiang5-mobl3.localSigned-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/cxl/pci.c

@@ -412,11 +412,6 @@ static bool is_cxl_restricted(struct pci_dev *pdev)
 	return pci_pcie_type(pdev) == PCI_EXP_TYPE_RC_END;
 }
 
-static void disable_aer(void *pdev)
-{
-	pci_disable_pcie_error_reporting(pdev);
-}
-
 static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct cxl_register_map map;
@@ -494,12 +489,6 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (IS_ERR(cxlmd))
 		return PTR_ERR(cxlmd);
 
-	if (cxlds->regs.ras) {
-		pci_enable_pcie_error_reporting(pdev);
-		rc = devm_add_action_or_reset(&pdev->dev, disable_aer, pdev);
-		if (rc)
-			return rc;
-	}
 	pci_save_state(pdev);
 
 	return rc;