net: mdio: thunder: Use pure PCI devres API

The currently used function pci_request_regions() is one of the
problematic "hybrid devres" PCI functions, which are sometimes managed
through devres, and sometimes not (depending on whether
pci_enable_device() or pcim_enable_device() has been called before).

The PCI subsystem wants to remove this behavior and, therefore, needs to
port all users to functions that don't have this problem.

Furthermore, the PCI function being managed implies that it's not
necessary to call pci_release_regions() manually.

Remove the calls to pci_release_regions().

Replace pci_request_regions() with pcim_request_all_regions().

Signed-off-by: Philipp Stanner <[e-mail]>
Reviewed-by: Jacob Keller <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/mdio/mdio-thunder.c

···
 		return err;
 	}
 
-	err = pci_request_regions(pdev, KBUILD_MODNAME);
+	err = pcim_request_all_regions(pdev, KBUILD_MODNAME);
 	if (err) {
-		dev_err(&pdev->dev, "pci_request_regions failed\n");
+		dev_err(&pdev->dev, "pcim_request_all_regions failed\n");
 		goto err_disable_device;
 	}
 
 	nexus->bar0 = pcim_iomap(pdev, 0, pci_resource_len(pdev, 0));
 	if (!nexus->bar0) {
 		err = -ENOMEM;
-		goto err_release_regions;
+		goto err_disable_device;
 	}
 
 	i = 0;
···
 	}
 	return 0;
 
-err_release_regions:
-	pci_release_regions(pdev);
-
 err_disable_device:
 	pci_set_drvdata(pdev, NULL);
 	return err;
···
 		mdiobus_unregister(bus->mii_bus);
 		oct_mdio_writeq(0, bus->register_base + SMI_EN);
 	}
-	pci_release_regions(pdev);
 	pci_set_drvdata(pdev, NULL);
 }