ionic: remove dead device fail path

Remove the probe error path code that leaves the driver bound
to the device, but with essentially a dead device.  This was
useful maybe twice early in the driver's life and no longer
makes sense to keep.

Fixes: 30a1e6d0 ("ionic: keep ionic dev on lif init fail")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>