phy: Reset init count on phy exit failure

phy: Reset init count on phy exit failure

In case the PHY exit callback reports failure, reset init_count to 0 anyway,
so the next attempt at PHY initialization might try to reinitialize the PHY
and restore it to normal operation.

Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Reviewed-by: Siddharth Vadapalli <s-vadapalli@ti.com>