pcm_native.c: remove unused label

This fixes the warning

  sound/core/pcm_native.c: In function 'snd_pcm_fasync':
  sound/core/pcm_native.c:3262: warning: label 'out' defined but not used
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

sound/core/pcm_native.c

@@ -3259,7 +3259,6 @@ static int snd_pcm_fasync(int fd, struct file * file, int on)
 	runtime = substream->runtime;
 
 	err = fasync_helper(fd, file, on, &runtime->fasync);
-out:
 	unlock_kernel();
 	if (err < 0)
 		return err;