[PATCH] error code cleanups for rtas wrappers

[Paul Mackerras]

John Rose writes:

> I do, but the patch only affects RPA PCI Hotplug/DLPAR.  I figured I'd
> wait for acceptance on this end before submitting those changes. 
> Callers within PPC64 "base" were either changed by the patch above, or
> already had sufficient checks (rc == 0, etc).

Yes, it was the callers in drivers/pci/hotplug/rpa* that I was
concerned about.  Some of them were testing for specific return
values.  If you have a patch to fix them too I'll forward both patches
to Andrew.

Paul.