iio: common: st_sensors: Fix use of uninitialize device structs

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: iio: common: st_sensors: Fix use of uninitialize device structs Throughout the various probe functions &indio_dev->dev is used before it is initialized. This caused a kernel panic in st_sensors_power_enable() when the call to devm_regulator_bulk_get_enable() fails and then calls dev_err_probe() with the uninitialized device. This seems to only cause a panic with dev_err_probe(), dev_err(), dev_warn() and dev_info() don't seem to cause a panic, but are fixed as well. The issue is reported and traced here: [1]

References

• https://git.kernel.org/stable/c/f9d4b618f1b9e6d760cc7c15052b92f7faf47201
• https://git.kernel.org/stable/c/610615c9668037e3eca11132063b93b2d945af13
• https://git.kernel.org/stable/c/3297a9016a45144883ec990bd4bd5b1d79cafb46
• https://git.kernel.org/stable/c/9f92e93e257b33e73622640a9205f8642ec16ddd