netfilter: xt_LED: don't output error message redundantly
netfilter: xt_LED: don't output error message redundantly

The function led_trigger_register() will only return -EEXIST when
error arises.

Signed-off-by: Duan Jiong <8328e395f8c1e2c56506478ccd778989e2637711@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <707d14912bb250caf67dfe0ea4035681fbfc4f56@netfilter.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs