myri10ge: fix error checking and return value in myri10ge_allocate_rings

Fix a missing error check in myri10ge_allocate_rings() and set status
to -ENOMEM before all actual allocations so that the error path returns
what it should.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index b05dc6ed7fb7..db282ed9ab7d 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1456,6 +1456,8 @@ static int myri10ge_allocate_rings(struct net_device *dev)
         status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_RING_SIZE, &cmd, 0);
         tx_ring_size = cmd.data0;
         status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
+        if (status != 0)
+                return status;
         rx_ring_size = cmd.data0;
 
         tx_ring_entries = tx_ring_size / sizeof(struct mcp_kreq_ether_send);
@@ -1463,6 +1465,8 @@ static int myri10ge_allocate_rings(struct net_device *dev)
         mgp->tx.mask = tx_ring_entries - 1;
         mgp->rx_small.mask = mgp->rx_big.mask = rx_ring_entries - 1;
 
+        status = -ENOMEM;
+
         /* allocate the host shadow rings */
 
         bytes = 8 + (MYRI10GE_MAX_SEND_DESC_TSO + 4)