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smsc95xx: avoid memory leak in smsc95xx_bind 

[ Upstream commit 3ed58f96a70b85ef646d5427258f677f1395b62f ]

In a case where the ID_REV register read is failed, the memory for a
private data structure has to be freed before returning error from the
function smsc95xx_bind.

Fixes: bbd9f9ee69 ("smsc95xx: add wol support for more frame types")
Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andre Edich 2020-07-06 10:39:35 +02:00 committed by Greg Kroah-Hartman
parent 81ed1f9fd0
commit 5c0192d285
1 changed files with 2 additions and 1 deletions
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3
drivers/net/usb/smsc95xx.c
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@ -1293,7 +1293,8 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
/* detect device revision as different features may be available */
ret = smsc95xx_read_reg(dev, ID_REV, &val);
if (ret < 0)
return ret;
goto free_pdata;
val >>= 16;
pdata->chip_id = val;
pdata->mdix_ctrl = get_mdix_status(dev->net);