xtsonic: free irq if sonic_open() fails

xtsonic_open() doesn't check sonic_open() return code. If it is error
we must free requested IRQ.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 2 deletions

diff --git a/drivers/net/xtsonic.c b/drivers/net/xtsonic.c
index fdba9cb3a599..9f12026d98e7 100644
--- a/drivers/net/xtsonic.c
+++ b/drivers/net/xtsonic.c
@@ -93,12 +93,20 @@ static unsigned short known_revisions[] =
 
 static int xtsonic_open(struct net_device *dev)
 {
-        if (request_irq(dev->irq,sonic_interrupt,IRQF_DISABLED,"sonic",dev)) {
+        int retval;
+
+        retval = request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED,
+                                "sonic", dev);
+        if (retval) {
                 printk(KERN_ERR "%s: unable to get IRQ %d.\n",
                        dev->name, dev->irq);
                 return -EAGAIN;
         }
-        return sonic_open(dev);
+
+        retval = sonic_open(dev);
+        if (retval)
+                free_irq(dev->irq, dev);
+        return retval;
 }
 
 static int xtsonic_close(struct net_device *dev)