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/bluetooth/bnep/Kconfig

config BT_BNEP
	tristate "BNEP protocol support"
	depends on BT_BREDR
	select CRC32
	help
	  BNEP (Bluetooth Network Encapsulation Protocol) is Ethernet
	  emulation layer on top of Bluetooth.  BNEP is required for
	  Bluetooth PAN (Personal Area Network).

	  Say Y here to compile BNEP support into the kernel or say M to
	  compile it as module (bnep).

config BT_BNEP_MC_FILTER
	bool "Multicast filter support"
	depends on BT_BNEP
	help
	  This option enables the multicast filter support for BNEP.

config BT_BNEP_PROTO_FILTER
	bool "Protocol filter support"
	depends on BT_BNEP
	help
	  This option enables the protocol filter support for BNEP.