drm/xe: fix the ERR_PTR() returned on failure to allocate tiny pt

Running coccinelle spatch gave the following warning:

./drivers/gpu/drm/xe/tests/xe_migrate.c:226:5-11: inconsistent IS_ERR
and PTR_ERR on line 228.

The code reports PTR_ERR(pt) when IS_ERR(tiny) is checked:

→ 211 pt = xe_bo_create_pin_map(xe, tile, m->q->vm, XE_PAGE_SIZE,
212 ttm_bo_type_kernel,
213 XE_BO_FLAG_VRAM_IF_DGFX(tile) |
214 XE_BO_FLAG_PINNED);
215 if (IS_ERR(pt)) {
216 KUNIT_FAIL(test, "Failed to allocate fake pt: %li\n",
217 PTR_ERR(pt));
218 goto free_big;
219 }
220
221 tiny = xe_bo_create_pin_map(xe, tile, m->q->vm,
→ 222 2 * SZ_4K,
223 ttm_bo_type_kernel,
224 XE_BO_FLAG_VRAM_IF_DGFX(tile) |
225 XE_BO_FLAG_PINNED);
→ 226 if (IS_ERR(tiny)) {
→ 227 KUNIT_FAIL(test, "Failed to allocate fake pt: %li\n",
→ 228 PTR_ERR(pt));
229 goto free_pt;
230 }

Now, the IS_ERR(tiny) and the corresponding PTR_ERR(pt) do not match.

Returning PTR_ERR(tiny), as the last failed function call, seems logical.

Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: Mirsad Todorovac <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Rodrigo Vivi <[e-mail]>

drivers/gpu/drm/xe/tests/xe_migrate.c

···
 				    XE_BO_FLAG_VRAM_IF_DGFX(tile) |
 				    XE_BO_FLAG_PINNED);
 	if (IS_ERR(tiny)) {
-		KUNIT_FAIL(test, "Failed to allocate fake pt: %li\n",
-			   PTR_ERR(pt));
+		KUNIT_FAIL(test, "Failed to allocate tiny fake pt: %li\n",
+			   PTR_ERR(tiny));
 		goto free_pt;
 	}