mlxsw: i2c: Fix initialization error flow

mlxsw: i2c: Fix initialization error flow

BugLink: https://bugs.launchpad.net/bugs/1969857
[ Upstream commit d452088cdfd5a4ad9d96d847d2273fe958d6339b ]

Add mutex_destroy() call in driver initialization error flow.

Fixes: 6882b0aee180f ("mlxsw: Introduce support for I2C bus")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220407070703.2421076-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>