ALSA: line6: Remove double line6_pcm_release() after failed acquire.

If there's an error, pcm is released in line6_pcm_acquire already.

Fixes: 247d95ee6dd2 ('ALSA: line6: Handle error from line6_pcm_acquire()')
Cc: <stable@vger.kernel.org> # v4.0+
Reviewed-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Andrej Krutak <dev@andree.sk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index 204cc07..2bc8879 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -55,7 +55,6 @@
 		err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE);
 		if (err < 0) {
 			line6pcm->impulse_volume = 0;
-			line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE);
 			return err;
 		}
 	} else {