lib: trace_backends: flash: Unset is_initialized in deinit()

Set is_initialized to false when the deinit() API is called.

Signed-off-by: Jan Tore Guggedal <[email protected]>

Author: jtguggedal

lib/nrf_modem_lib/trace_backends/flash/flash.c

@@ -429,6 +429,9 @@ int trace_backend_clear(void)
 int trace_backend_deinit(void)
 {
 	buffer_flush_to_flash();
+
+	is_initialized = false;
+
 	return 0;
 }