Revert "powerpc/pseries/hotplug-cpu: Remove double free in error path"

Revert "powerpc/pseries/hotplug-cpu: Remove double free in error path"

This reverts commit a2b3e76aaba2d05ce3eec85d6ac5c2b1eefc30a7.

Since the commit d9d115bea296 ("powerpc/pseries: Add cpu DLPAR
support for drc-info property"), the 'cpu_drcs' wouldn't be double
freed when the 'cpus' node not found.

So we needn't apply this patch, otherwise, the memory will be leaked.

Fixes: a2b3e76aaba2 ("powerpc/pseries/hotplug-cpu: Remove double free in error path")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
[mpe: Caused by me applying a patch to a function that had changed in the interim]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201111020752.1686139-1-zhangxiaoxu5@huawei.com