mainline inclusion
from mainline-v5.4-rc1
commit 728c1e2a05e4b5fc52fab3421dce772a806612a2
category: bugfix
bugzilla: 13690
CVE: CVE-2019-19074

-------------------------------------------------

In ath9k_wmi_cmd, the allocated network buffer needs to be released
if timeout happens. Otherwise memory will be leaked.
Signed-off-by: NNavid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>