[PATCH] drm/loongson: Fix return value check for kzalloc

[Chen Ni]

kzalloc doesn't return ERR_PTR, delete unneeded IS_ERR test.

Signed-off-by: Chen Ni <nic...@iscas.ac.cn>
---
 drivers/gpu/drm/loongson/lsdc_gfxpll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/loongson/lsdc_gfxpll.c 
b/drivers/gpu/drm/loongson/lsdc_gfxpll.c
index 249c09d703ad..50b9f45db5b0 100644
--- a/drivers/gpu/drm/loongson/lsdc_gfxpll.c
+++ b/drivers/gpu/drm/loongson/lsdc_gfxpll.c
@@ -179,7 +179,7 @@ int loongson_gfxpll_create(struct drm_device *ddev,
        int ret;
 
        this = kzalloc(sizeof(*this), GFP_KERNEL);
-       if (IS_ERR_OR_NULL(this))
+       if (!this)
                return -ENOMEM;
 
        this->ddev = ddev;
-- 
2.25.1