logging: rtt: Do not retry on error in non blocking mode
logging: rtt: Do not retry on error in non blocking mode

Retry in non blocking mode can lead to a quite long (busy) wait.
Refs #28211

Signed-off-by: Guillaume Lager <73a137297c67d2c3a8f88db4b715c3321d1681be@gmail.com>

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