netfilter: nfnetlink: avoid recurrent netns lookups in call_batch

netfilter: nfnetlink: avoid recurrent netns lookups in call_batch

Pass the net pointer to the call_batch callback functions so we can skip
recurrent lookups.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Tested-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
(cherry picked from commit 633c9a840d0bf1cce690f3165bdacd8ab412949e)

Orabug: 24749203
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>
Reviewed-by: John Haxby <john.haxby@oracle.com>
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>