[PATCH] smsc911x: Add check for ioremap_nocache() return code

[Alexey Khoroshilov]

There is no check for return code of smsc911x_drv_probe()
in smsc911x_drv_probe(). The patch adds one.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru>
---
 drivers/net/ethernet/smsc/smsc911x.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/smsc/smsc911x.c 
b/drivers/net/ethernet/smsc/smsc911x.c
index ea1bbc355b4d..0b6a39b003a4 100644
--- a/drivers/net/ethernet/smsc/smsc911x.c
+++ b/drivers/net/ethernet/smsc/smsc911x.c
@@ -2467,6 +2467,10 @@ static int smsc911x_drv_probe(struct platform_device 
*pdev)
        pdata = netdev_priv(dev);
        dev->irq = irq;
        pdata->ioaddr = ioremap_nocache(res->start, res_size);
+       if (!pdata->ioaddr) {
+               retval = -ENOMEM;
+               goto out_ioremap_fail;
+       }
 
        pdata->dev = dev;
        pdata->msg_enable = ((1 << debug) - 1);
@@ -2572,6 +2576,7 @@ static int smsc911x_drv_probe(struct platform_device 
*pdev)
        smsc911x_free_resources(pdev);
 out_request_resources_fail:
        iounmap(pdata->ioaddr);
+out_ioremap_fail:
        free_netdev(dev);
 out_release_io_1:
        release_mem_region(res->start, resource_size(res));
-- 
2.7.4