drm/vmwgfx: Fix OTABLE takedown

Don't fence and free the BO if command submission fails.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_mob.c

@@ -191,17 +191,18 @@ static void vmw_takedown_otable_base(struct vmw_private *dev_priv,
 	if (unlikely(cmd == NULL)) {
 		DRM_ERROR("Failed reserving FIFO space for OTable "
 			  "takedown.\n");
-	} else {
-		memset(cmd, 0, sizeof(*cmd));
-		cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE;
-		cmd->header.size = sizeof(cmd->body);
-		cmd->body.type = type;
-		cmd->body.baseAddress = 0;
-		cmd->body.sizeInBytes = 0;
-		cmd->body.validSizeInBytes = 0;
-		cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID;
-		vmw_fifo_commit(dev_priv, sizeof(*cmd));
+		return;
 	}
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE;
+	cmd->header.size = sizeof(cmd->body);
+	cmd->body.type = type;
+	cmd->body.baseAddress = 0;
+	cmd->body.sizeInBytes = 0;
+	cmd->body.validSizeInBytes = 0;
+	cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID;
+	vmw_fifo_commit(dev_priv, sizeof(*cmd));
 
 	if (bo) {
 		int ret;