dom0less: Fix LLC coloring when mixing colored and non-colored domains

llc_colors_str being outside the main loop makes domains without
explicit coloring inherit the colors of the last colored domain parsed.

Move it inside so that's no longer the case.

Fixes: 5948dc16759c("xen/arm: add support for cache coloring...")
Signed-off-by: Alejandro Vallejo <alejandro.garciavallejo@amd.com>
Reviewed-by: Denis Mukhin <dmukhin@ford.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

xen/common/device-tree/dom0less-build.c

@@ -829,11 +829,11 @@ void __init create_domUs(void)
     bool iommu = false;
     const struct dt_device_node *cpupool_node,
                                 *chosen = dt_find_node_by_path("/chosen");
-    const char *llc_colors_str = NULL;
 
     BUG_ON(chosen == NULL);
     dt_for_each_child_node(chosen, node)
     {
+        const char *llc_colors_str = NULL;
         struct domain *d;
         struct xen_domctl_createdomain d_cfg = {0};
         unsigned int flags = 0U;