Revert "nwfilter: Move save of config until after successful assign"
Revert "nwfilter: Move save of config until after successful assign"

This reverts commit b3e71a8830b2683ee88fa10cb048eabb99a446c0.

As it turns out this ends up very badly as the @def could be Free'd
even though it's owned by @obj as a result of the AssignDef.

andreabolognani/libvirt,datto/libvirt,jfehlig/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,zippy2/libvirt,eskultety/libvirt,eskultety/libvirt,crobinso/libvirt,nertpinx/libvirt,crobinso/libvirt,fabianfreyer/libvirt,olafhering/libvirt,olafhering/libvirt,libvirt/libvirt,datto/libvirt,datto/libvirt,eskultety/libvirt,datto/libvirt,andreabolognani/libvirt,jardasgit/libvirt,olafhering/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,jardasgit/libvirt,libvirt/libvirt,libvirt/libvirt,zippy2/libvirt,libvirt/libvirt,jardasgit/libvirt,jardasgit/libvirt,jfehlig/libvirt,nertpinx/libvirt,crobinso/libvirt,zippy2/libvirt,zippy2/libvirt,olafhering/libvirt,nertpinx/libvirt,eskultety/libvirt,crobinso/libvirt,datto/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,nertpinx/libvirt,andreabolognani/libvirt,eskultety/libvirt,nertpinx/libvirt