This patch fixes the initialization error in flow classification
pipeline. Originally, when there is no key_mask specified in the
CFG file, all '0' mask is utilized.
Fixes: 1a33c5ea2f45 ("examples/ip_pipeline: clean config parser")
Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>