net/bnxt: fix missed unlock
net/bnxt: fix missed unlock

Coverity issue: 357741
Fixes: 02a95625fe9c ("net/bnxt: add flow stats in extended stats")
Cc: stable@dpdk.org

Signed-off-by: Yunjian Wang <9985a735d5d5f80ef648228b285228d6eb6eaf45@huawei.com>
Acked-by: Somnath Kotur <b8220280eb86080d22ca0cb32db0b374b9a89cc6@broadcom.com>
Reviewed-by: Ajit Khaparde <01965fbd61169dc18f3fb5e13de7f67d298f8924@broadcom.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk