ematch: Fix auto-loading of ematch modules.
Ignacy Gawędzki authored
[ Upstream commit 34eea79e

 ]

In tcf_em_validate(), after calling request_module() to load the
kind-specific module, set em->ops to NULL before returning -EAGAIN, so
that module_put() is not called again by tcf_em_tree_destroy().
Signed-off-by: default avatarIgnacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Acked-by: default avatarCong Wang <cwang@twopensource.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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