[PATCH] powerpc/pseries: safely roll back failed DLPAR cpu add

[Nathan Lynch]

Nathan Lynch <nathanl at linux.ibm.com> writes:
> Move dlpar_offline_cpu() before dlpar_online_cpu() so the latter can
> use the former to re-offline any threads it has onlined when it
> encounters an error.

Since moving this code yields a few valid checkpatch warnings, I've
submitted a v2 which cleans these up first.

https://openpower.xyz/job/snowpatch/job/snowpatch-linux-checkpatch/9150//artifact/linux/checkpatch.log

v2: https://patchwork.ozlabs.org/cover/1178067/