ethtool: use ethnl_parse_header_dev_put()
It seems I missed that most ethnl_parse_header_dev_get() callers declare an on-stack struct ethnl_req_info, and that they simply call dev_put(req_info.dev) when about to return. Add ethnl_parse_header_dev_put() helper to properly untrack reference taken by ethnl_parse_header_dev_get(). Fixes: e4b89540 ("netlink: add net device refcount tracker to struct ethnl_req_info") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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