ALSA: us122l: drop redundant interface references

Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.

Similarly, USB core holds a reference to all interfaces in the active
configuration so there is no need for a driver to take a reference to a
sibling interface only to release it at disconnect either.

Drop the redundant references to reduce cargo culting, make it easier to
spot drivers where extra references are needed, and reduce the risk of
memory leaks when drivers fail to release them.

Signed-off-by: Johan Hovold <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

sound/usb/usx2y/us122l.c

···
 		return err;
 	}
 
-	usb_get_intf(usb_ifnum_to_if(device, 0));
-	usb_get_dev(device);
 	*cardp = card;
 	return 0;
 }
···
 	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
 		return 0;
 
-	err = us122l_usb_probe(usb_get_intf(intf), id, &card);
-	if (err < 0) {
-		usb_put_intf(intf);
+	err = us122l_usb_probe(intf, id, &card);
+	if (err < 0)
 		return err;
-	}
 
 	usb_set_intfdata(intf, card);
 	return 0;
···
 	list_for_each(p, &us122l->midi_list) {
 		snd_usbmidi_disconnect(p);
 	}
-
-	usb_put_intf(usb_ifnum_to_if(us122l->dev, 0));
-	usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
-	usb_put_dev(us122l->dev);
 
 	snd_card_free_when_closed(card);
 }