This patch:
 - adds kfree() where necessary
 - prevents potential null dereferences
 - makes use of kfree_skb()
 - replaces -1 for failed kzallocs with -ENOMEM
Signed-off-by: NChristoph Fritz <chf.fritz@googlemail.com>
Reviewed-by: NKiran Divekar <dkiran@marvell.com>
Tested-by: NAmitkumar Karwar <akarwar@marvell.com>
Acked-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>