net: hns3: fix missing rule state assignment

Currently, when adding flow director rule, it missed to set
rule state. Which may cause the rule state in software is
unconsistent with hardware.

Fixes: fc4243b8

 ("net: hns3: refactor flow director configuration")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>