perf header: Get rid of write_it label

Simplifying the code a bit.

Signed-off-by: Jiri Olsa <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/header.c

···
 	int ret;
 
 	ret = get_cpuid(buffer, sizeof(buffer));
-	if (!ret)
-		goto write_it;
+	if (ret)
+		return -1;
 
-	return -1;
-write_it:
 	return do_write_string(ff, buffer);
 }