[PATCH] drm/amd/display: Fix warning comparing pointer to 0

[Jiapeng Chong]

Fix the following coccicheck warning:

./drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c:744:35-36:
WARNING comparing pointer to 0.

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.ch...@linux.alibaba.com>
---
 drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c 
b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
index 8f78e62b28b7..48005def1164 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
@@ -741,7 +741,7 @@ void vg_clk_mgr_construct(
                                sizeof(struct watermarks),
                                &clk_mgr->smu_wm_set.mc_address.quad_part);
 
-       if (clk_mgr->smu_wm_set.wm_set == 0) {
+       if (!clk_mgr->smu_wm_set.wm_set) {
                clk_mgr->smu_wm_set.wm_set = &dummy_wms;
                clk_mgr->smu_wm_set.mc_address.quad_part = 0;
        }
-- 
2.20.1.7.g153144c