i2c: tegra: Remove redundant check in tegra_i2c_issue_bus_clear()

The tegra_i2c_wait_for_config_load() checks for 'has_config_load_reg' by
itself, hence there is no need to duplicate the check.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>