drm/vram-helper: make drm_vram_mm_debugfs_init() return 0
Since 987d65d0 (drm: debugfs: make drm_debugfs_create_files() never fail), drm_debugfs_create_files() never fails and should return void. Therefore, remove its use as the return value of drm_vram_mm_debugfs_init(), and have the function return 0 directly. v2: have drm_vram_mm_debugfs_init() return 0 instead of void to avoid introducing build issues and build breakage. References: https://lists.freedesktop.org/archives/dri-devel/2020-February/257183.html Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200310133121.27913-11-wambui.karugax@gmail.com
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