crypto: dcp - Check the return value from devm_ioremap_resource()

devm_ioremap_resource() may fail, so better check its return value and propagate
it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/dcp.c b/drivers/crypto/dcp.c
index 7b77c84578547de160e5b7255a9f4c3d3ea7ee89..247ab8048f5bea3f09e5537f103626fe84e3bce5 100644 (file)
--- a/drivers/crypto/dcp.c
+++ b/drivers/crypto/dcp.c
@@ -734,6 +734,8 @@ static int dcp_probe(struct platform_device *pdev)
 
        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        dev->dcp_regs_base = devm_ioremap_resource(&pdev->dev, r);
+       if (IS_ERR(dev->dcp_regs_base))
+               return PTR_ERR(dev->dcp_regs_base);
 
        dcp_set(dev, DCP_CTRL_SFRST, DCP_REG_CTRL);
        udelay(10);