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Return zero from icc_set_bw() to MC client driver if MRQ_BWMGR_INT is not supported by the BPMP-FW. Currently, 'EINVAL' is returned which causes error message in client drivers even when the platform doesn't support scaling. Fixes: 9365bf006f53 ("PCI: tegra194: Add interconnect support in Tegra234") Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20230621134400.23070-5-sumitg@nvidia.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>