[PATCH] clk: bcm: rpi: Fix error handling of raspberrypi_fw_get_rate

[Stephen Boyd]

Quoting Stefan Wahren (2022-06-25 01:36:43)
> The function raspberrypi_fw_get_rate (e.g. used for the recalc_rate
> hook) can fail to get the clock rate from the firmware. In this case
> we cannot return a signed error value, which would be casted to
> unsigned long. Fix this by returning 0 instead.
> 
> Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
> ---

Applied to clk-fixes