netfilter: ctnetlink: do not erase error code with EINVAL

[ Upstream commit 77522ff02f333434612bd72df9b376f8d3836e4d ]

And be consistent in error management for both orig/reply filtering

Fixes: cb8aa9a3affb ("netfilter: ctnetlink: add kernel side filtering for dump")
Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
1 file changed