drm/xe: Move primary GT allocation from xe_tile_init_early to xe_tile_init

During the early days of the Xe driver, there were cases where we
accessed some fields in the primary GT's xe_gt structure before the GT
itself was formally initialized; this required that the structure itself
be allocated during xe_tile_init_early(). A lot of refactoring of the
device probe has happened since that time and there's no longer a need
to allocate the primary GT early. Move the allocation into
xe_info_init() where GT initialization happens and where we're doing the
allocation of the media GT.

v2:
- Only make this change after a separate patch to perform VF GMD_ID
lookup with a dummy GT instead of xe_root_mmio_gt().

Cc: Michal Wajdeczko <[e-mail]>
Reviewed-by: Lucas De Marchi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Matt Roper <[e-mail]>

drivers/gpu/drm/xe/xe_pci.c

···
 	for_each_tile(tile, xe, id) {
 		int err;
 
+		tile->primary_gt = xe_gt_alloc(tile);
+		if (IS_ERR(tile->primary_gt))
+			return PTR_ERR(tile->primary_gt);
+
 		gt = tile->primary_gt;
 		gt->info.type = XE_GT_TYPE_MAIN;
 		gt->info.id = tile->id * xe->info.max_gt_per_tile;

drivers/gpu/drm/xe/xe_tile.c

···
 	if (err)
 		return err;
 
-	tile->primary_gt = xe_gt_alloc(tile);
-	if (IS_ERR(tile->primary_gt))
-		return PTR_ERR(tile->primary_gt);
-
 	xe_pcode_init(tile);
 
 	return 0;