ALSA: fix one memory leak in sound jack

Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/jack.c

@@ -141,6 +141,7 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
 
 fail_input:
 	input_free_device(jack->input_dev);
+	kfree(jack->id);
 	kfree(jack);
 	return err;
 }