hotplug/rpaphp: Remove unused error path code

Commit f46753c5e354b857b20ab8e0fe7b2579831dc369 ("PCI: introduce pci_slot") removed the need for this error path.  Eliminate this warning:

drivers/pci/hotplug/rpaphp_slot.c: In function 'rpaphp_register_slot':
drivers/pci/hotplug/rpaphp_slot.c:151: warning: label 'sysfs_fail' defined but not used

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c
index 9b714ea..5088450 100644
--- a/drivers/pci/hotplug/rpaphp_slot.c
+++ b/drivers/pci/hotplug/rpaphp_slot.c
@@ -147,9 +147,5 @@
 	list_add(&slot->rpaphp_slot_list, &rpaphp_slot_head);
 	info("Slot [%s] registered\n", slot->name);
 	return 0;
-
-sysfs_fail:
-	pci_hp_deregister(php_slot);
-	return retval;
 }