crypto: s5p-sss - Add error handling in s5p_aes_probe()

The function s5p_aes_probe() does not perform sufficient error
checking after executing platform_get_resource(), thus fix it.

Fixes: c2afad6 ("crypto: s5p-sss - Add HASH support for Exynos")
Cc: <[email protected]>
Signed-off-by: Tang Bin <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

Author: Tang Bin

drivers/crypto/s5p-sss.c

@@ -2171,6 +2171,8 @@ static int s5p_aes_probe(struct platform_device *pdev)
 
 	variant = find_s5p_sss_version(pdev);
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -EINVAL;
 
 	/*
 	 * Note: HASH and PRNG uses the same registers in secss, avoid