crypto: caam - check irq_of_parse_and_map for errors

Irq_of_parse_and_map will return zero in case of error, so add a error
check for that.

Signed-off-by: Andrey Smirnov <[email protected]>
Cc: Chris Healy <[email protected]>
Cc: Lucas Stach <[email protected]>
Cc: Horia Geantă <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Iuliana Prodan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Horia Geantă <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

Author: ndreys

drivers/crypto/caam/jr.c

@@ -537,6 +537,10 @@ static int caam_jr_probe(struct platform_device *pdev)
 
 	/* Identify the interrupt */
 	jrpriv->irq = irq_of_parse_and_map(nprop, 0);
+	if (!jrpriv->irq) {
+		dev_err(jrdev, "irq_of_parse_and_map failed\n");
+		return -EINVAL;
+	}
 
 	/* Now do the platform independent part */
 	error = caam_jr_init(jrdev); /* now turn on hardware */