mmc: sdhci-of-arasan: Add NULL check for data field

Add NULL check for data field retrieved from of_device_get_match_data()
before dereferencing the data.
Addresses-coverity: Dereference null return value (NULL_RETURNS)

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

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

@@ -1612,6 +1612,9 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 	const struct sdhci_arasan_of_data *data;
 
 	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
 	host = sdhci_pltfm_init(pdev, data->pdata, sizeof(*sdhci_arasan));
 
 	if (IS_ERR(host))