This function does not need to return an error so make it return void.
This fixes the following coccicheck warning:

drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c:178:5-8: Unneeded
variable: "ret". Return "0" on line 193

Signed-off-by: Jason Yan <yanai...@huawei.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
index 11f2bebe3869..12df1955b1ef 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
@@ -167,7 +167,7 @@ int dpu_core_perf_crtc_check(struct drm_crtc *crtc,
        return 0;
 }
 
-static int _dpu_core_perf_crtc_update_bus(struct dpu_kms *kms,
+static void _dpu_core_perf_crtc_update_bus(struct dpu_kms *kms,
                struct drm_crtc *crtc)
 {
        struct dpu_core_perf_params perf = { 0 };
@@ -175,7 +175,6 @@ static int _dpu_core_perf_crtc_update_bus(struct dpu_kms 
*kms,
                                        = dpu_crtc_get_client_type(crtc);
        struct drm_crtc *tmp_crtc;
        struct dpu_crtc_state *dpu_cstate;
-       int ret = 0;
 
        drm_for_each_crtc(tmp_crtc, crtc->dev) {
                if (tmp_crtc->enabled &&
@@ -190,7 +189,6 @@ static int _dpu_core_perf_crtc_update_bus(struct dpu_kms 
*kms,
                                        dpu_cstate->new_perf.bw_ctl);
                }
        }
-       return ret;
 }
 
 /**
@@ -335,14 +333,8 @@ int dpu_core_perf_crtc_update(struct drm_crtc *crtc,
        trace_dpu_perf_crtc_update(crtc->base.id, new->bw_ctl,
                new->core_clk_rate, stop_req, update_bus, update_clk);
 
-       if (update_bus) {
-               ret = _dpu_core_perf_crtc_update_bus(kms, crtc);
-               if (ret) {
-                       DPU_ERROR("crtc-%d: failed to update bus bw vote\n",
-                                 crtc->base.id);
-                       return ret;
-               }
-       }
+       if (update_bus)
+               _dpu_core_perf_crtc_update_bus(kms, crtc);
 
        /*
         * Update the clock after bandwidth vote to ensure
-- 
2.21.1

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