ASoC: rsnd: remove error pointer for adg->clkout[i]

commit d7f29819
("ASoC: rcar: fixup of_clk_add_provider() usage for multi clkout")
added adg->clkout[i] = ERR_PTR(-ENOENT),
but, adg->clkout[i] are assumed NULL or clk pointer.
This patch fix it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/adg.c

@@ -556,7 +556,6 @@ static void rsnd_adg_get_clkout(struct rsnd_priv *priv,
 			clk = clk_register_fixed_rate(dev, clkout_name[i],
 						      parent_clk_name, 0,
 						      req_rate[0]);
-			adg->clkout[i] = ERR_PTR(-ENOENT);
 			if (!IS_ERR(clk))
 				adg->clkout[i] = clk;
 		}