clk: clk-cdce706: simplify getting the adapter of a client

We have a dedicated pointer for that, so use it. Much easier to read and
less computation involved.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk-cdce706.c

@@ -633,7 +633,7 @@ of_clk_cdce_get(struct of_phandle_args *clkspec, void *data)
 static int cdce706_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
-	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+	struct i2c_adapter *adapter = client->adapter;
 	struct cdce706_dev_data *cdce;
 	int ret;