drm/amdgpu: squash lines for simple wrapper functions

Remove unneeded variables and assignments.

Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1473863952-7658-2-git-send-email-yamada.masahiro@socionext.com
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index 00663a7b..619b604 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -466,11 +466,7 @@
 
 static int dce_virtual_resume(void *handle)
 {
-	int ret;
-
-	ret = dce_virtual_hw_init(handle);
-
-	return ret;
+	return dce_virtual_hw_init(handle);
 }
 
 static bool dce_virtual_is_idle(void *handle)