mmc: rtsx_pci_sdmmc: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d (device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is not needed to manually clear the device driver data to NULL.

---
 drivers/mmc/host/rtsx_pci_sdmmc.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

index ad13f42..82a35b9 100644
@@ -1316,8 +1316,6 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
 	mmc_remove_host(mmc);
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	dev_dbg(&(pdev->dev),
 		": Realtek PCI-E SDMMC controller has been removed\n");
 

1.7.2.5