net/bnxt: fix flow destroy
net/bnxt: fix flow destroy

bnxt_hwrm_clear_l2_filter needs to be called only if the filter type
is L2 and not otherwise.
Also check for the return value of bnxt_hwrm_clear_l2_filter().

Fixes: 5ef3b79fdfe6 ("net/bnxt: support flow filter ops")
Cc: stable@dpdk.org

Signed-off-by: Ajit Khaparde <01965fbd61169dc18f3fb5e13de7f67d298f8924@broadcom.com>

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