openvswitch: Fix helper reference leak
[ Upstream commit 2f3ab9f9 ] If the actions (re)allocation fails, or the actions list is larger than the maximum size, and the conntrack action is the last action when these problems are hit, then references to helper modules may be leaked. Fix the issue. Fixes: cae3a262 ("openvswitch: Allow attaching helpers to ct action") Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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