drm/msm: Remove unneeded variable: "rc"

Remove unneeded variable: "rc".
Signed-off-by: zuoqilin <zuoqilin@yulong.com>
Link: https://lore.kernel.org/r/20210318032422.1285-1-zuoqilin1@163.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/dp/dp_panel.c

@@ -350,7 +350,6 @@ void dp_panel_dump_regs(struct dp_panel *dp_panel)
 
 int dp_panel_timing_cfg(struct dp_panel *dp_panel)
 {
-	int rc = 0;
 	u32 data, total_ver, total_hor;
 	struct dp_catalog *catalog;
 	struct dp_panel_private *panel;
@@ -403,7 +402,7 @@ int dp_panel_timing_cfg(struct dp_panel *dp_panel)
 	dp_catalog_panel_timing_cfg(catalog);
 	panel->panel_on = true;
 
-	return rc;
+	return 0;
 }
 
 int dp_panel_init_panel_info(struct dp_panel *dp_panel)