mmc: sdhci-of-at91: remove a line of dead code

The goto is correct and the unreachable "return -EINVAL" should be
removed.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-of-at91.c

@@ -111,7 +111,6 @@ static int sdhci_at91_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to set gck");
 		goto hclock_disable_unprepare;
-		return -EINVAL;
 	}
 	/*
 	 * We need to check if we have the requested rate for gck because in