netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()

If something fails in nf_tables_table_enable(), it unregisters the
chains. But the rollback code is the same as nf_tables_table_disable()
almostly, except there is one counter check.  Now create one wrapper
function to eliminate the duplicated codes.

Signed-off-by: Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

path: root/net/netlink/Makefile

#
# Makefile for the netlink driver.
#

obj-y  				:= af_netlink.o genetlink.o

obj-$(CONFIG_NETLINK_DIAG)	+= netlink_diag.o
netlink_diag-y			:= diag.o