ipmi:msghandler: Remove some user level processing in panic mode

When run to completion is set, don't call things that will claim
mutexes or call user callbacks.

Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_msghandler.c

@@ -4808,6 +4808,10 @@ static void smi_work(struct work_struct *t)
 
 	handle_new_recv_msgs(intf);
 
+	/* Nothing below applies during panic time. */
+	if (run_to_completion)
+		return;
+
 	/*
 	 * If the pretimout count is non-zero, decrement one from it and
 	 * deliver pretimeouts to all the users.