drm/xe/mocs: Initialize MOCS index early

commit 2a58b21 upstream.

MOCS uc_index is used even before it is initialized in the following
callstack
    guc_prepare_xfer()
    __xe_guc_upload()
    xe_guc_min_load_for_hwconfig()
    xe_uc_init_hwconfig()
    xe_gt_init_hwconfig()

Do MOCS index initialization earlier in the device probe.

Signed-off-by: Balasubramani Vivekanandan <[email protected]>
Reviewed-by: Ravi Kumar Vodapalli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Matt Roper <[email protected]>
(cherry picked from commit 241cc82)
Signed-off-by: Lucas De Marchi <[email protected]>
Stable-dep-of: 3155ac8 ("drm/xe: Move page fault init after topology init")
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: baluvivek

drivers/gpu/drm/xe/xe_gt.c

@@ -389,6 +389,8 @@ int xe_gt_init_early(struct xe_gt *gt)
 	if (err)
 		return err;
 
+	xe_mocs_init_early(gt);
+
 	return 0;
 }
 
@@ -596,8 +598,6 @@ int xe_gt_init(struct xe_gt *gt)
 	if (err)
 		return err;
 
-	xe_mocs_init_early(gt);
-
 	err = xe_gt_sysfs_init(gt);
 	if (err)
 		return err;