Add a check for error returned by divider value calculation to avoid
writing error code into hw register.
Signed-off-by: NAlex Frid <afrid@nvidia.com>
Reviewed-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: NJon Mayo <jmayo@nvidia.com>
Fixes: bca9690b ("clk: divider: Make generic for usage elsewhere")
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>