An error loop index was used while querying statistics data
of tqps, which may cause call trace.

Fixes: 496d03e9 ("net: hns3: Add Ethtool support to HNS3 driver")
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>