Potential bugs found in 3c59x

Recently I test linux device drivers 3.17.2. 
The target file is drivers/net/ethernet/3com/3c59x.c, which is used to build
3c59x.ko. I hope you can help me check my findings:
[1] The function vortex_up is called by vortex_open when initializing the
ethernet card driver. But when vortex_up is failed, which means that it
returns the error value, "out" segment is executed immediately to halt the
process. However, the resources allocated by __netdev_alloc_skb in
vortex_open are not released by dev_kfree_skb when vortex_up is failed.
[2] As shown in [1], one reason that vortex_up is failed is that
pci_enable_device is failed(return the error value) in vortex_up, and
"err_out" segment is executed immediately to return.
Could you help me check these findings? Thank you very much, and I'm looking
forward to your reply.