set_mi_row_col: Refactor functions and their calls.

BUG=aomedia:442

Change-Id: Ic5e4bb170ab7fd68355008cc4155e1a8910f344e
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index fe46c8d..3595bac 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -2313,12 +2313,11 @@
 
   cpi->td.mb.mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col);
 
+  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw,
 #if CONFIG_DEPENDENT_HORZTILES
-  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols,
-                 cm->dependent_horz_tiles);
-#else
-  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);
-#endif
+                 cm->dependent_horz_tiles,
+#endif  // CONFIG_DEPENDENT_HORZTILES
+                 cm->mi_rows, cm->mi_cols);
 
   if (frame_is_intra_only(cm)) {
     write_mb_modes_kf(cm, xd, mi_row, mi_col, w);
@@ -2389,12 +2388,11 @@
   bw = mi_size_wide[mbmi->sb_type];
   cpi->td.mb.mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col);
 
+  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw,
 #if CONFIG_DEPENDENT_HORZTILES
-  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols,
-                 cm->dependent_horz_tiles);
-#else
-  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);
-#endif
+                 cm->dependent_horz_tiles,
+#endif  // CONFIG_DEPENDENT_HORZTILES
+                 cm->mi_rows, cm->mi_cols);
 
 #if CONFIG_PALETTE
   for (plane = 0; plane <= 1; ++plane) {
@@ -2806,14 +2804,12 @@
 #if CONFIG_SUPERTX
   mbmi = &cm->mi_grid_visible[mi_offset]->mbmi;
   xd->mi = cm->mi_grid_visible + mi_offset;
+  set_mi_row_col(xd, tile, mi_row, mi_size_high[bsize], mi_col,
+                 mi_size_wide[bsize],
 #if CONFIG_DEPENDENT_HORZTILES
-  set_mi_row_col(xd, tile, mi_row, mi_size_high[bsize], mi_col,
-                 mi_size_wide[bsize], cm->mi_rows, cm->mi_cols,
-                 cm->dependent_horz_tiles);
-#else
-  set_mi_row_col(xd, tile, mi_row, mi_size_high[bsize], mi_col,
-                 mi_size_wide[bsize], cm->mi_rows, cm->mi_cols);
-#endif
+                 cm->dependent_horz_tiles,
+#endif  // CONFIG_DEPENDENT_HORZTILES
+                 cm->mi_rows, cm->mi_cols);
   if (!supertx_enabled && !frame_is_intra_only(cm) &&
       partition != PARTITION_NONE && bsize <= MAX_SUPERTX_BLOCK_SIZE &&
       !xd->lossless[0]) {
@@ -2903,13 +2899,11 @@
 
     xd->mi = cm->mi_grid_visible + mi_offset;
     supertx_size = mbmi->tx_size;
+    set_mi_row_col(xd, tile, mi_row, bsh, mi_col, bsw,
 #if CONFIG_DEPENDENT_HORZTILES
-    set_mi_row_col(xd, tile, mi_row, bsh, mi_col, bsw, cm->mi_rows, cm->mi_cols,
-                   cm->dependent_horz_tiles);
-#else
-    set_mi_row_col(xd, tile, mi_row, bsh, mi_col, bsw, cm->mi_rows,
-                   cm->mi_cols);
-#endif
+                   cm->dependent_horz_tiles,
+#endif  // CONFIG_DEPENDENT_HORZTILES
+                   cm->mi_rows, cm->mi_cols);
 
     assert(IMPLIES(!cm->seg.enabled, mbmi->segment_id_supertx == 0));
     assert(mbmi->segment_id_supertx < MAX_SEGMENTS);