Move bit_depth init out of setup_quantization

This also fixes a compiling error under --enable-vp9_highbitdepth.

Change-Id: I9d1dcb95d3336d797eb3c23a4702c30b04355357
diff --git a/vp10/decoder/decodeframe.c b/vp10/decoder/decodeframe.c
index 31b9c7e..c0fbc49 100644
--- a/vp10/decoder/decodeframe.c
+++ b/vp10/decoder/decodeframe.c
@@ -1150,10 +1150,6 @@
   cm->uv_dc_delta_q = read_delta_q(rb);
   cm->uv_ac_delta_q = read_delta_q(rb);
   cm->dequant_bit_depth = cm->bit_depth;
-
-#if CONFIG_VP9_HIGHBITDEPTH
-  xd->bd = (int)cm->bit_depth;
-#endif
 }
 
 static void setup_segmentation_dequant(VP10_COMMON *const cm) {
@@ -2092,6 +2088,10 @@
 
   setup_loopfilter(&cm->lf, rb);
   setup_quantization(cm, rb);
+#if CONFIG_VP9_HIGHBITDEPTH
+  xd->bd = (int)cm->bit_depth;
+#endif
+
   setup_segmentation(cm, rb);
 
   {