Install samba.service after the unitdir is created

samba.spec

@@ -869,8 +869,6 @@ install -m 0644 %{SOURCE201} packaging/README.downgrade
 %if ! %with_dc
 install -m 0644 %{SOURCE200} packaging/README.dc
 install -m 0644 %{SOURCE200} packaging/README.dc-libs
-%else
-install -m 0644 %{SOURCE3} %{buildroot}%{_unitdir}/samba.service
 %endif
 
 install -d -m 0755 %{buildroot}%{_unitdir}
@@ -878,6 +876,10 @@ for i in nmb smb winbind ; do
     cat packaging/systemd/$i.service | sed -e 's@\[Service\]@[Service]\nEnvironment=KRB5CCNAME=FILE:/run/samba/krb5cc_samba@g' >tmp$i.service
     install -m 0644 tmp$i.service %{buildroot}%{_unitdir}/$i.service
 done
+%if %with_dc
+install -m 0644 %{SOURCE3} %{buildroot}%{_unitdir}/samba.service
+%endif
+
 %if %with_clustering_support
 install -m 0644 ctdb/config/ctdb.service %{buildroot}%{_unitdir}
 %endif