[ Upstream commit 7d945b046be3d2605dbb1806e73095aadd7ae129 ] Ensure that resources allocated by iio_channel_get_all_cb() are released on driver unbind. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Link: https://lore.kernel.org/r/20221109170849.273719-1-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>