tracing: Fix indentation of return statement in print_trace_fmt()

The return statement inside the nested if block in print_trace_fmt()
is not properly indented, making the code structure unclear. This was
flagged by smatch as a warning.

Add proper indentation to the return statement to match the kernel
coding style and improve readability.

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20260210153903.8041-1-tttturtleruss@gmail.com
Signed-off-by: Haoyang LIU <tttturtleruss@gmail.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Author: tttturtle-russ

kernel/trace/trace.c

@@ -3537,7 +3537,7 @@ static enum print_line_t print_trace_fmt(struct trace_iterator *iter)
 			/* ftrace and system call events are still OK */
 			if ((event->type > __TRACE_LAST_TYPE) &&
 			    !is_syscall_event(event))
-			return print_event_fields(iter, event);
+				return print_event_fields(iter, event);
 		}
 		return event->funcs->trace(iter, sym_flags, event);
 	}