crypto: mxs-dcp - Fix platform_get_irq() error handling

We should test the error case for each platform_get_irq() assignment and
propagate the error accordingly.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/mxs-dcp.c b/drivers/crypto/mxs-dcp.c
index 37e0706..08761d6 100644
--- a/drivers/crypto/mxs-dcp.c
+++ b/drivers/crypto/mxs-dcp.c
@@ -908,9 +908,14 @@
 
 	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	dcp_vmi_irq = platform_get_irq(pdev, 0);
+	if (dcp_vmi_irq < 0) {
+		ret = dcp_vmi_irq;
+		goto err_mutex;
+	}
+
 	dcp_irq = platform_get_irq(pdev, 1);
-	if (dcp_vmi_irq < 0 || dcp_irq < 0) {
-		ret = -EINVAL;
+	if (dcp_irq < 0) {
+		ret = dcp_irq;
 		goto err_mutex;
 	}