node_device_udev: remove unnecessary ret variables
node_device_udev: remove unnecessary ret variables

Remove ret variables and labels from functions where there is no cleanup
to be done.

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