[PATCH] drm/nouveau/acr/ga102: fix NULL vs IS_ERR() check in ga102_acr_wpr_parse()

[Dan Carpenter]

The nvkm_acr_lsfw_add() function never returns NULL, it returns error
pointers.  Update the check to match.

Fixes: 4b569ded09fd ("drm/nouveau/acr/ga102: initial support")
Signed-off-by: Dan Carpenter <dan.carpen...@linaro.org>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c 
b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c
index c7d38609bb7e..aae96a94acee 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c
@@ -218,11 +218,13 @@ static int
 ga102_acr_wpr_parse(struct nvkm_acr *acr)
 {
        const struct wpr_header_v2 *hdr = (void *)acr->wpr_fw->data;
+       struct nvkm_acr_lsfw *lsfw;
 
        while (hdr->wpr.falcon_id != WPR_HEADER_V1_FALCON_ID_INVALID) {
                wpr_header_v2_dump(&acr->subdev, hdr);
-               if (!nvkm_acr_lsfw_add(NULL, acr, NULL, (hdr++)->wpr.falcon_id))
-                       return -ENOMEM;
+               lsfw = nvkm_acr_lsfw_add(NULL, acr, NULL, 
(hdr++)->wpr.falcon_id);
+               if (IS_ERR(lsfw))
+                       return PTR_ERR(lsfw);
        }
 
        return 0;
-- 
2.47.2