Need to remove and reinstall my kernel module for it to work

I have compiled linux-kernel 2.6.33.7 with the xt_tls kernel module.

• Kernel module file xt_tls_main.c is in /lib-mpc830xtwr-20111228/rpm/BUILD/Linux-2.6.33.7/drivers/iPort3/xt_tls_main.c.
• Needed library files and header file are added to the appropriate folder.
• Its creates xt_tls.ko.
• With the iptables rules it functioned well.

When I am inserting xt_tls.ko via insmod it shows up in lsmod. I can add iptables rules too, but it will not work. After removing the iptables rule and the xt_tls.ko module, again, I do the same thing: insmodxt_tls.ko, iptables rule, then it functioned properly.

I have to remove and reinstall my xt_tls.ko module twice. Why is this happening? I don't understand.