drm/xe: Use ERR_CAST instead of ERR_PTR(PTR_ERR(...))

Use ERR_CAST inline function instead of ERR_PTR(PTR_ERR(...)).

Signed-off-by: Fushuai Wang <wangfushuai@baidu.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250914101630.17719-1-wangfushuai@baidu.com


Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>