[BNX2]: check return of dev_alloc_skb in bnx2_test_loopback

Check return of dev_alloc_skb in bnx2_test_loopback, and handle
appropriately.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed