avcodec/ra144enc: Don't free unnecessarily

The init function of the real_144 encoder calls its own close function
if a call to ff_lpc_init() fails; yet nothing has been allocated before
that point and ff_lpc_init() can be expected to clean up after itself on
error (the documentation does not say anything to the contrary and the
current implementation can only fail if the only allocation fails, so
there is nothing to clean up on error anyway), so this is unnecessary.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavcodec/ra144enc.c

@@ -65,14 +65,11 @@ static av_cold int ra144_encode_init(AVCodecContext * avctx)
     ret = ff_lpc_init(&ractx->lpc_ctx, avctx->frame_size, LPC_ORDER,
                       FF_LPC_TYPE_LEVINSON);
     if (ret < 0)
-        goto error;
+        return ret;
 
     ff_af_queue_init(avctx, &ractx->afq);
 
     return 0;
-error:
-    ra144_encode_close(avctx);
-    return ret;
 }