nwfilter: Remove unprivileged code path to set base
nwfilter: Remove unprivileged code path to set base

Commit id f8ab364c removed ability to run this driver unprivileged. Coverity
detected the check and flagged it.

olafhering/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,taget/libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,zhlcindy/libvirt-1.1.4-maintain,siboulet/libvirt-openvz,jardasgit/libvirt,siboulet/libvirt-openvz,jardasgit/libvirt,siboulet/libvirt-openvz,eskultety/libvirt,libvirt/libvirt,cbosdo/libvirt,agx/libvirt,datto/libvirt,crobinso/libvirt,nertpinx/libvirt,trainstack/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,jfehlig/libvirt,andreabolognani/libvirt,jardasgit/libvirt,crobinso/libvirt,zippy2/libvirt,trainstack/libvirt,elmarco/libvirt,libvirt/libvirt,taget/libvirt,taget/libvirt,VenkatDatta/libvirt,cbosdo/libvirt,zhlcindy/libvirt-1.1.4-maintain,bjzhang/libvirt,rlaager/libvirt,nertpinx/libvirt,eskultety/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,zippy2/libvirt,rlaager/libvirt,crobinso/libvirt,iam-TJ/libvirt,datto/libvirt,cbosdo/libvirt,zhlcindy/libvirt-1.1.4-maintain,fabianfreyer/libvirt,agx/libvirt,trainstack/libvirt,fabianfreyer/libvirt,libvirt/libvirt,taget/libvirt,agx/libvirt,jardasgit/libvirt,agx/libvirt,datto/libvirt,bjzhang/libvirt,datto/libvirt,VenkatDatta/libvirt,olafhering/libvirt,elmarco/libvirt,bjzhang/libvirt,crobinso/libvirt,jfehlig/libvirt,trainstack/libvirt,andreabolognani/libvirt,eskultety/libvirt,iam-TJ/libvirt,andreabolognani/libvirt,cbosdo/libvirt,nertpinx/libvirt,bjzhang/libvirt,iam-TJ/libvirt,eskultety/libvirt,VenkatDatta/libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,zhlcindy/libvirt-1.1.4-maintain,jardasgit/libvirt,andreabolognani/libvirt,shugaoye/libvirt,jfehlig/libvirt,trainstack/libvirt,rlaager/libvirt,rlaager/libvirt,shugaoye/libvirt,shugaoye/libvirt,iam-TJ/libvirt,trainstack/libvirt,olafhering/libvirt,elmarco/libvirt,eskultety/libvirt,zippy2/libvirt,iam-TJ/libvirt,elmarco/libvirt,datto/libvirt,nertpinx/libvirt,olafhering/libvirt,zippy2/libvirt,rlaager/libvirt,cbosdo/libvirt,agx/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,libvirt/libvirt,VenkatDatta/libvirt,taget/libvirt,nertpinx/libvirt,trainstack/libvirt,bjzhang/libvirt