PCI: Make pcibios_add_platform_entries() return errors

Currently pcibios_add_platform_entries() returns void, but could fail,
so instead have it return an int and propagate errors up to
pci_create_sysfs_dev_files().

Fixes:
arch/powerpc/kernel/pci_64.c: In function 'pcibios_add_platform_entries':
arch/powerpc/kernel/pci_64.c:878: warning: ignoring return value of
	'device_create_file', declared with attribute warn_unused_result
arch/powerpc/kernel/pci_32.c: In function 'pcibios_add_platform_entries':
  arch/powerpc/kernel/pci_32.c:1043: warning: ignoring return value of
	'device_create_file', declared with attribute warn_unused_result

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index e5737f0..9c4a123 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -600,9 +600,9 @@
 	.write = pci_write_config,
 };
 
-void __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
+int __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
 {
-	return;
+	return 0;
 }
 
 int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
@@ -645,10 +645,14 @@
 		}
 	}
 	/* add platform-specific attributes */
-	pcibios_add_platform_entries(pdev);
+	if (pcibios_add_platform_entries(pdev))
+		goto err_rom_file;
 
 	return 0;
 
+err_rom_file:
+	if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
+		sysfs_remove_bin_file(&pdev->dev.kobj, rom_attr);
 err_rom:
 	kfree(rom_attr);
 err_resource_files: