[mutter] x11/output: Fix init tile info guard

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 4ecc80fd8025842452262001fc4d6b7047696d4e
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Nov 5 08:46:40 2020 +0100

    x11/output: Fix init tile info guard
    
    Monitor tile info is possible to fetch when RANDR version 15 is exposed
    by the X11 server. We had inverted the check meaning that only if older
    versions were advertised would we attempt to init the tile information.
    Fix this guard, thus fix monitor tiling on X11.
    
    Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1524

 src/backends/x11/meta-output-xrandr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/backends/x11/meta-output-xrandr.c b/src/backends/x11/meta-output-xrandr.c
index e17215ff46..3d55d5fc95 100644
--- a/src/backends/x11/meta-output-xrandr.c
+++ b/src/backends/x11/meta-output-xrandr.c
@@ -848,7 +848,7 @@ meta_output_xrandr_new (MetaGpuXrandr *gpu_xrandr,
       output_info->height_mm = xrandr_output->mm_height;
     }
 
-  if (!meta_monitor_manager_xrandr_has_randr15 (monitor_manager_xrandr))
+  if (meta_monitor_manager_xrandr_has_randr15 (monitor_manager_xrandr))
     output_info_init_tile_info (output_info, xdisplay, output_id);
   output_info_init_modes (output_info, gpu, xrandr_output);
   output_info_init_crtcs (output_info, gpu, xrandr_output);