Staging: hv: netvsc: Get rid of an unnecessary print statement in netvsc_probe()

Get rid of an unnecessary print statement in netvsc_probe(). Furthermore,
this fixes a bug since netdev_err is being invoked after the device has
been freed.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>