ASoC: sti: Fix error handling if of_clk_get() fails

We intended to return here.  The current code has a static checker
warning because we set "ret" but don't use it.

Fixes: 76c2145ded ("ASoC: sti: Add CPU DAI driver for playback")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Arnaud POULIQUEN <arnaud.pouliquen@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sti/uniperif_player.c

@@ -1074,7 +1074,7 @@ int uni_player_init(struct platform_device *pdev,
 	player->clk = of_clk_get(pdev->dev.of_node, 0);
 	if (IS_ERR(player->clk)) {
 		dev_err(player->dev, "Failed to get clock\n");
-		ret = PTR_ERR(player->clk);
+		return PTR_ERR(player->clk);
 	}
 
 	/* Select the frequency synthesizer clock */