soc: qcom: pmic_glink: don't traverse clients list without a lock

soc: qcom: pmic_glink: don't traverse clients list without a lock

Take the client_lock before traversing the clients list at the
pmic_glink_state_notify_clients() function. This is required to keep the
list traversal safe from concurrent modification.

Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
Signed-off-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Andrew Halaney <[email protected]>
Reviewed-by: Mukesh Ojha <[email protected]>
Tested-by: Xilin Wu <[email protected]> # on QCS8550 AYN Odin 2
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>