tracing: eprobe: Add missing log index

Add trace_probe_log_set_index(1) to allow report correct error
if user input wrong SYSTEM.EVENT format.

Link: https://lore.kernel.org/all/1656296348-16111-2-git-send-email-quic_linyyuan@quicinc.com/Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

kernel/trace/trace_eprobe.c

@@ -881,6 +881,7 @@ static int __trace_eprobe_create(int argc, const char *argv[])
 	if (!is_good_name(event) || !is_good_name(group))
 		goto parse_error;
 
+	trace_probe_log_set_index(1);
 	sys_event = argv[1];
 	ret = traceprobe_parse_event_name(&sys_event, &sys_name, buf2,
 					  sys_event - argv[1]);