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[ Upstream commitfb80ef67e8] Upon termination of the rpmsg_device, driver_override needs to be freed to avoid leaking the potentially assigned string. Fixes:42cd402b8f("rpmsg: Fix kfree() of static memory on setting driver_override") Fixes:39e47767ec("rpmsg: Add driver_override device attribute for rpmsg_device") Reviewed-by: Chris Lew <quic_clew@quicinc.com> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230109223931.1706429-1-quic_bjorande@quicinc.com Signed-off-by: Sasha Levin <sashal@kernel.org>