devres: remove unnecessary unlocks in devres_release_group()

devres: remove unnecessary unlocks in devres_release_group()

There is no need to call spin_unlock_irqrestore() in every conditional
block, as release_nodes() can safely be called with an empty list, in
case we hit the "if else" or "else" case.

We do not use a scoped_guard() here to not unnecessarily change the
indentation level.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260202235210.55176-8-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>