shell: fix missing "update" for the last RXRDY signal

Fixed the issue when sometimes "update" is not called for the
last RXRDY signal. First, need to reset the signal and only
after that need to call the "update" function.

Signed-off-by: Yuriy Vynnychek <[email protected]>

Author: Yuriy Vynnychek

subsys/shell/shell.c

@@ -1330,17 +1330,17 @@ void shell_thread(void *shell_handle, void *arg_log_backend,
 
 		k_mutex_lock(&shell->ctx->wr_mtx, K_FOREVER);
 
-		if (shell->iface->api->update) {
-			shell->iface->api->update(shell->iface);
-		}
-
 		shell_signal_handle(shell, SHELL_SIGNAL_KILL, kill_handler);
 		shell_signal_handle(shell, SHELL_SIGNAL_RXRDY, shell_process);
 		if (IS_ENABLED(CONFIG_SHELL_LOG_BACKEND)) {
 			shell_signal_handle(shell, SHELL_SIGNAL_LOG_MSG,
 					    shell_log_process);
 		}
 
+		if (shell->iface->api->update) {
+			shell->iface->api->update(shell->iface);
+		}
+
 		k_mutex_unlock(&shell->ctx->wr_mtx);
 	}
 }