Fix zabbix-proxy SELinux module loading and unloading on install

zabbix.spec

@@ -543,9 +543,6 @@ fi
 %endif
 /usr/sbin/semodule -s targeted -i \
     %{_datadir}/selinux/packages/zabbix/zabbix-proxy.pp.bz
-if [ $1 -eq 0 ] ; then
-    /usr/sbin/semodule -s targeted -r zabbix-proxy &> /dev/null || :
-fi
 
 %preun proxy
 %if 0%{?rhel} >= 7
@@ -561,6 +558,9 @@ fi
 %if 0%{?rhel} >= 7
 %systemd_postun
 %endif
+if [ $1 -eq 0 ] ; then
+    /usr/sbin/semodule -s targeted -r zabbix-proxy &> /dev/null || :
+fi
 
 %files
 %defattr(-,root,root,-)