crypto: omap-aes - fix error return code in omap_aes_probe()

Propagate the return value of platform_get_irq on failure.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/omap-aes.c

@@ -1095,6 +1095,7 @@ static int omap_aes_probe(struct platform_device *pdev)
 		irq = platform_get_irq(pdev, 0);
 		if (irq < 0) {
 			dev_err(dev, "can't get IRQ resource\n");
+			err = irq;
 			goto err_irq;
 		}