admin: Clean up error path in adminServerListClients
admin: Clean up error path in adminServerListClients

Coverity noted that in adminServerListClients if virNetServerGetClients
returns a -1 into ret, then the call virObjectListFreeCount in cleanup
will not be very happy.

Adjust the code to skip the cleanup label and just return -1 if
virNetServerGetClients fails.

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

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