ALSA: oss: delete self assignment

No need to assign "uctl" to itself.  Delete it.

Fixes: 55f98ec ("ALSA: oss: Relax __free() variable declarations")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/aYXvm2YoV2yRimhk@stanley.mountain
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: Dan Carpenter

sound/core/oss/mixer_oss.c

@@ -792,7 +792,7 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
 	struct snd_ctl_elem_info *uinfo __free(kfree) =
 		kzalloc(sizeof(*uinfo), GFP_KERNEL);
 	struct snd_ctl_elem_value *uctl __free(kfree) =
-		uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
+		kzalloc(sizeof(*uctl), GFP_KERNEL);
 	if (uinfo == NULL || uctl == NULL)
 		return -ENOMEM;
 	guard(rwsem_read)(&card->controls_rwsem);