drivers/dma: fix error return code

Set the return variable to an error code as done elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index c29dacff66fa..c18aebf7d5aa 100644
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -972,8 +972,10 @@ static int cppi41_dma_probe(struct platform_device *pdev)
                 goto err_chans;
 
         irq = irq_of_parse_and_map(dev->of_node, 0);
-        if (!irq)
+        if (!irq) {
+                ret = -EINVAL;
                 goto err_irq;
+        }
 
         cppi_writel(USBSS_IRQ_PD_COMP, cdd->usbss_mem + USBSS_IRQ_ENABLER);
 
diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
index 8da48c6b2a38..f9e5c0a5e494 100644
--- a/drivers/dma/ppc4xx/adma.c
+++ b/drivers/dma/ppc4xx/adma.c
@@ -4139,6 +4139,7 @@ static int ppc440spe_adma_probe(struct platform_device *ofdev)
         regs = ioremap(res.start, resource_size(&res));
         if (!regs) {
                 dev_err(&ofdev->dev, "failed to ioremap regs!\n");
+                ret = -ENOMEM;
                 goto err_regs_alloc;
         }