qlcnic: Avoid potential NULL pointer dereference
[ Upstream commit 5bf7295f ] netdev_alloc_skb can fail and return a NULL pointer which is dereferenced without a check. The patch avoids such a scenario. Signed-off-by: NAditya Pakki <pakki001@umn.edu> Signed-off-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NSasha Levin (Microsoft) <sashal@kernel.org> Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
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