net: config: ensure counter k_sem init'd before reset
net: config: ensure counter k_sem init'd before reset

check_interface resets the counter semaphore, but
net_config_init_by_iface first calls check_interface, then inits
the semaphore.

Initialize the semaphore up front to allow the k_sem_reset call
to work properly.

Signed-off-by: James Harris <b715f98d3986d76dba2b763bc755375d4eb5b801@intel.com>

galak/zephyr,nashif/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,Vudentz/zephyr,nashif/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,Vudentz/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr