drm/amdgpu: squash lines for simple wrapper functions

Remove unneeded variables and assignments.
Reviewed-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1473863952-7658-2-git-send-email-yamada.masahiro@socionext.com

drivers/gpu/drm/amd/amdgpu/dce_virtual.c

@@ -466,11 +466,7 @@ static int dce_virtual_suspend(void *handle)
 
 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)

drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c

@@ -190,12 +190,8 @@ static int sdma_v2_4_init_microcode(struct amdgpu_device *adev)
  */
 static uint32_t sdma_v2_4_ring_get_rptr(struct amdgpu_ring *ring)
 {
-	u32 rptr;
-
 	/* XXX check if swapping is necessary on BE */
-	rptr = ring->adev->wb.wb[ring->rptr_offs] >> 2;
-
-	return rptr;
+	return ring->adev->wb.wb[ring->rptr_offs] >> 2;
 }
 
 /**

drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c

@@ -335,12 +335,8 @@ static int sdma_v3_0_init_microcode(struct amdgpu_device *adev)
  */
 static uint32_t sdma_v3_0_ring_get_rptr(struct amdgpu_ring *ring)
 {
-	u32 rptr;
-
 	/* XXX check if swapping is necessary on BE */
-	rptr = ring->adev->wb.wb[ring->rptr_offs] >> 2;
-
-	return rptr;
+	return ring->adev->wb.wb[ring->rptr_offs] >> 2;
 }
 
 /**