[PATCH] PCI Hotplug: Convert error paths in ibmphp to use goto

[PATCH] PCI Hotplug: Convert error paths in ibmphp to use goto

This patch converts the error paths in several functions in ibmphp to use
goto to the end of the function to kill code duplication.

It also kills some memsets of pointer members of a struct where the struct
itself is freed directly after.

This one has 2 modification from the first version: the if is back as
discussed and one extra long line (>> 150 chars) is wrapped now.