drm: drop return value of drm_free_agp

No caller (rightly) cares about it, so drop it.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_memory.c

@@ -106,9 +106,9 @@ DRM_AGP_MEM *drm_alloc_agp(struct drm_device * dev, int pages, u32 type)
 }
 
 /** Wrapper around agp_free_memory() */
-int drm_free_agp(DRM_AGP_MEM * handle, int pages)
+void drm_free_agp(DRM_AGP_MEM * handle, int pages)
 {
-	return drm_agp_free_memory(handle) ? 0 : -EINVAL;
+	drm_agp_free_memory(handle);
 }
 EXPORT_SYMBOL(drm_free_agp);
 

include/drm/drmP.h

@@ -1178,8 +1178,8 @@ extern int drm_mem_info(char *buf, char **start, off_t offset,
 			int request, int *eof, void *data);
 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
 
+extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
-extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
 				       struct page **pages,