drm/xe/bo: Fix bo leak on unaligned size validation in xe_bo_init_locked()

When type is ttm_bo_type_device and aligned_size != size, the function
returns an error without freeing a caller-provided bo, violating the
documented contract that bo is freed on failure.

Add xe_bo_free(bo) before returning the error.

Fixes: 4e03b58 ("drm/xe/uapi: Reject bo creation of unaligned size")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.6
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260408175255.3402838-2-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
(cherry picked from commit 601c2aa)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Author: ShuichengLin

drivers/gpu/drm/xe/xe_bo.c

@@ -2342,8 +2342,10 @@ struct xe_bo *xe_bo_init_locked(struct xe_device *xe, struct xe_bo *bo,
 		alignment = SZ_4K >> PAGE_SHIFT;
 	}
 
-	if (type == ttm_bo_type_device && aligned_size != size)
+	if (type == ttm_bo_type_device && aligned_size != size) {
+		xe_bo_free(bo);
 		return ERR_PTR(-EINVAL);
+	}
 
 	if (!bo) {
 		bo = xe_bo_alloc();