mmc: meson-mx-sdio: return correct error code

This has a copy and paste bug so we use "host->fixed_factor_clk" which
is a valid pointer instead of "host->cfg_div_clk" which holds the error
code.

Fixes: ed80a13b ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/meson-mx-sdio.c

@@ -621,7 +621,7 @@ static int meson_mx_mmc_register_clks(struct meson_mx_mmc_host *host)
 	host->cfg_div_clk = devm_clk_register(host->controller_dev,
 					      &host->cfg_div.hw);
 	if (WARN_ON(PTR_ERR_OR_ZERO(host->cfg_div_clk)))
-		return PTR_ERR(host->fixed_factor_clk);
+		return PTR_ERR(host->cfg_div_clk);
 
 	return 0;
 }