sata: ahci-da850: Fix some error handling paths in 'ahci_da850_probe()'

'rc' is known to be 0 at this point.
If 'platform_get_resource()' or 'devm_ioremap()' fail, return -ENOMEM
instead of 0 which means success.

tj: Changed error code from -ENOMEM to -ENODEV for get_resource
    failure as suggested by Sergei.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/ata/ahci_da850.c b/drivers/ata/ahci_da850.c
index 1a50cd3b4233..9b34dff64536 100644
--- a/drivers/ata/ahci_da850.c
+++ b/drivers/ata/ahci_da850.c
@@ -216,12 +216,16 @@ static int ahci_da850_probe(struct platform_device *pdev)
                 return rc;
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-        if (!res)
+        if (!res) {
+                rc = -ENODEV;
                 goto disable_resources;
+        }
 
         pwrdn_reg = devm_ioremap(dev, res->start, resource_size(res));
-        if (!pwrdn_reg)
+        if (!pwrdn_reg) {
+                rc = -ENOMEM;
                 goto disable_resources;
+        }
 
         da850_sata_init(dev, pwrdn_reg, hpriv->mmio, mpy);