drm: fix _DRM_GEM addmap error message

Fix the error message: this is add, not rm.
Move the closing brace to proper spot: _DRM_GEM branch should not be
included in the block.
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_bufs.c

@@ -310,10 +310,10 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset,
 			  (unsigned long long)map->offset, map->size);
 
 		break;
+	}
 	case _DRM_GEM:
-		DRM_ERROR("tried to rmmap GEM object\n");
+		DRM_ERROR("tried to addmap GEM object\n");
 		break;
-	}
 	case _DRM_SCATTER_GATHER:
 		if (!dev->sg) {
 			kfree(map);