tracing: Exit out immediately after update_marker_trace()

tracing: Exit out immediately after update_marker_trace()

The call to update_marker_trace() in set_tracer_flag() performs the update
to the tr->trace_flags. There's no reason to perform it again after it is
called. Return immediately instead.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/20251106003501.726406870@kernel.org
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>