tracing/ftrace: fix the check on nopped sites

Impact: fix a dynamic tracing failure

Recently, the function and function graph tracers failed to use dynamic
tracing after the following commit:

fa9d13cf
(ftrace: don't try to __ftrace_replace_code on !FTRACE_FL_CONVERTED rec)

The patch is right except a mistake on the check for the FTRACE_FL_CONVERTED
flag. The code patching is aborted in case of successfully nopped sites.
What we want is the opposite: ignore the callsites that haven't been nopped.
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: NSteven Rostedt <srostedt@redhat.com>

kernel/trace/ftrace.c

@@ -537,7 +537,7 @@ static void ftrace_replace_code(int enable)
 		 */
 		if (rec->flags & FTRACE_FL_FREE ||
 		    rec->flags & FTRACE_FL_FAILED ||
-		    rec->flags & FTRACE_FL_CONVERTED)
+		    !(rec->flags & FTRACE_FL_CONVERTED))
 			continue;
 
 		/* ignore updates to this record's mcount site */