mmc: sdhci-pxav2: remove unnecessary platform_set_drvdata() call

sdhci_pltfm_init() has already set the platform drvdata for us, remove
the unnecessary platform_set_drvdata() call.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pxav2.c

@@ -226,8 +226,6 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
 		goto err_add_host;
 	}
 
-	platform_set_drvdata(pdev, host);
-
 	return 0;
 
 err_add_host: