Revert "matrix: Reorder point unprojection"

This reverts commit 1c46f0b.

The change breaks existing users.

src/graphene-matrix.c

@@ -1286,15 +1286,12 @@ graphene_matrix_unproject_point3d (const graphene_matrix_t  *projection,
   float values[4];
   float inv_w;
 
-  graphene_simd4x4f_matrix_mul (&modelview->value, &projection->value, &tmp);
-  graphene_simd4x4f_inverse (&tmp, &tmp);
+  graphene_simd4x4f_inverse (&projection->value, &tmp);
+  graphene_simd4x4f_matrix_mul (&tmp, &modelview->value, &tmp);
 
   v = graphene_simd4f_init (point->x, point->y, point->z, 1.f);
   graphene_simd4x4f_vec4_mul (&tmp, &v, &v);
 
-  if (graphene_simd4f_get_w (v) == 0.f)
-    return;
-
   inv_w = 1.f / graphene_simd4f_get_w (v);
   v = graphene_simd4f_mul (v, graphene_simd4f_splat (inv_w));