linux-imx

i2c: imx: fix system hang due to access i2c registers without clock

Currently, i2c_imx_bus_busy in i2c_imx_xfer is called before
pm_runtime_get which means the clocks are still not enabled.
This will cause a hang on IMX as IMX requires accessing registers
with clocks.

So let's change the order to ensure the clocks are enabled before
accessing registers. This is also a more safe way to access registers,
suppose shouldn't affect other platforms.

Fixes: 4a6ebf1c125c ("i2c: imx: add workaround for erratum ERR010027")
Reviewed-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>