net/tap: fix fd leak on creation failure

net/tap: fix fd leak on creation failure

When eth_dev_tap_create() is failed, nlsk_fd and ka_fd won't be closed
thus leading fds leak. Zero is a valid fd. Ultimately leads to a valid
fd was closed by mistake.

Fixes: bf7b7f437b49 ("net/tap: create netdevice during probing")
Fixes: cb7e68da630a ("net/tap: fix cleanup on allocation failure")
Cc: stable@dpdk.org
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>