drm/xe/fbc: set compressed_fb to NULL on error
On DG2 we get a massive flood of the following:
[ 1068.790446] xe 0000:03:00.0: drm_WARN_ON((!!(fbc->compressed_fb)))
[ 1068.790465] WARNING: CPU: 9 PID: 637 at drivers/gpu/drm/xe/display/intel_fbc.c:843 intel_fbc_update+0x605/0x670 [xe]
Signed-off-by: Matthew Auld matthew.auld@intel.com
Edited by Matthew Auld