net: hns3: free the ring_data structrue when change tqps

net: hns3: free the ring_data structrue when change tqps

BugLink: http://bugs.launchpad.net/bugs/1756097
This patch fixes a memory leak problems in change tqps process,
the function hns3_uninit_all_ring and hns3_init_all_ring
may be called many times.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Mingguang Qu <qumingguang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 99fdf6b1cadf41bb253408589788f025027274f3)
Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>