vxge: fix return of a free'd memblock on a failed dma mapping
authorColin Ian King <colin.king@canonical.com>
Fri, 12 Apr 2019 13:45:12 +0000 (14:45 +0100)
committerDavid S. Miller <davem@davemloft.net>
Fri, 12 Apr 2019 23:54:41 +0000 (16:54 -0700)
commit0a2c34f18c94b596562bf3d019fceab998b8b584
tree12148eca601733dc0c909d081100a819c2813b56
parentbddc028a4f2ac8cf4d0cd1c696b5f95d8305a553
vxge: fix return of a free'd memblock on a failed dma mapping

Currently if a pci dma mapping failure is detected a free'd
memblock address is returned rather than a NULL (that indicates
an error). Fix this by ensuring NULL is returned on this error case.

Addresses-Coverity: ("Use after free")
Fixes: 528f727279ae ("vxge: code cleanup and reorganization")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/neterion/vxge/vxge-config.c