Since 987d65d01356 (drm: debugfs: make
drm_debugfs_create_files() never fail), drm_debugfs_create_files() never
fails. Therefore, remove the check and error handling of the return
value of drm_debugfs_create_files() as it is not needed in
tilcdc_debugfs_init().

Also remove local variables that are not used after the changes.

v2: remove conversion of tilcdc_debugfs_init() to void to avoid build
breakage and enable individual compilation.

References: 
https://lists.freedesktop.org/archives/dri-devel/2020-February/257183.html
Signed-off-by: Wambui Karuga <wambui.karu...@gmail.com>
---
 drivers/gpu/drm/tilcdc/tilcdc_drv.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c 
b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 0791a0200cc3..3f7071eb9c78 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -480,24 +480,17 @@ static struct drm_info_list tilcdc_debugfs_list[] = {
 
 static int tilcdc_debugfs_init(struct drm_minor *minor)
 {
-       struct drm_device *dev = minor->dev;
        struct tilcdc_module *mod;
-       int ret;
 
-       ret = drm_debugfs_create_files(tilcdc_debugfs_list,
-                       ARRAY_SIZE(tilcdc_debugfs_list),
-                       minor->debugfs_root, minor);
+       drm_debugfs_create_files(tilcdc_debugfs_list,
+                                ARRAY_SIZE(tilcdc_debugfs_list),
+                                minor->debugfs_root, minor);
 
        list_for_each_entry(mod, &module_list, list)
                if (mod->funcs->debugfs_init)
                        mod->funcs->debugfs_init(mod, minor);
 
-       if (ret) {
-               dev_err(dev->dev, "could not install tilcdc_debugfs_list\n");
-               return ret;
-       }
-
-       return ret;
+       return 0;
 }
 #endif
 
-- 
2.25.1

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