drm/msm: Remove unneeded variable: "rc"

Remove unneeded variable: "rc".

Signed-off-by: zuoqilin <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>
Signed-off-by: Rob Clark <[e-mail]>

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

···
 
 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;
···
 	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)