Fix ioc issues in tpl model

Change-Id: I61597aceb0ae537c6f6aad2bd023b36557fdab04

av1/encoder/tpl_model.c

diff --git a/av1/encoder/tpl_model.c b/av1/encoder/tpl_model.c
index cfa64b9..7b7cfba 100644
--- a/av1/encoder/tpl_model.c
+++ b/av1/encoder/tpl_model.c
@@ -423,8 +423,8 @@
   return (mi_row >> right_shift) * stride + (mi_col >> right_shift);
 }
 
-static int delta_rate_cost(int64_t delta_rate, int64_t recrf_dist,
-                           int64_t srcrf_dist, int pix_num) {
+static int64_t delta_rate_cost(int64_t delta_rate, int64_t recrf_dist,
+                               int64_t srcrf_dist, int pix_num) {
   double beta = (double)srcrf_dist / recrf_dist;
   int64_t rate_cost = delta_rate;