[ATM]: [he] initialize lock and tasklet earlier

[ Upstream commit: 8a8037ac ]

if you are lucky (unlucky?) enough to have shared interrupts, the
interrupt handler can be called before the tasklet and lock are ready
for use.

Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Adrian Bunk <bunk@kernel.org>