[PATCH] rtlwifi: fix memory leak in rtl_usb_probe

[Navid Emamdoost]

In rtl_usb_probe, a new hw is allocated via ieee80211_alloc_hw(). This
allocation should be released in case of allocation failure for
rtlpriv->usb_data.

Fixes: a7959c1394d4 ("rtlwifi: Preallocate USB read buffers and eliminate 
kalloc in read routine")
Signed-off-by: Navid Emamdoost <navid.emamdo...@gmail.com>
---
 drivers/net/wireless/realtek/rtlwifi/usb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c 
b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 4b59f3b46b28..265f95261da8 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -1021,8 +1021,10 @@ int rtl_usb_probe(struct usb_interface *intf,
        rtlpriv->hw = hw;
        rtlpriv->usb_data = kcalloc(RTL_USB_MAX_RX_COUNT, sizeof(u32),
                                    GFP_KERNEL);
-       if (!rtlpriv->usb_data)
+       if (!rtlpriv->usb_data) {
+               ieee80211_free_hw(hw);
                return -ENOMEM;
+       }
 
        /* this spin lock must be initialized early */
        spin_lock_init(&rtlpriv->locks.usb_lock);
-- 
2.17.1