anv/blorp: Explicitly set row_pitch in do_buffer_copy

We have a very specific row pitch that we want and we don't want ISL to
be changing it on us so just be explicit about it.

Fixes: a40f043034
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

src/intel/vulkan/anv_blorp.c

@@ -564,10 +564,10 @@ do_buffer_copy(struct blorp_batch *batch,
                  .levels = 1,
                  .array_len = 1,
                  .samples = 1,
+                 .row_pitch = width * block_size,
                  .usage = ISL_SURF_USAGE_TEXTURE_BIT |
                           ISL_SURF_USAGE_RENDER_TARGET_BIT,
                  .tiling_flags = ISL_TILING_LINEAR_BIT);
-   assert(surf.row_pitch == width * block_size);
 
    struct blorp_surf src_blorp_surf = {
       .surf = &surf,