clk: milbeaut: convert from divider_ro_round_rate() to divider_ro_determine_rate()

The divider_ro_round_rate() function is now deprecated, so let's migrate
to divider_ro_determine_rate() instead so that this deprecated API can
be removed.

Note that when the main function itself was migrated to use
determine_rate, this was mistakenly converted to:

    req->rate = divider_round_rate(...)

This is invalid in the case when an error occurs since it can set the
rate to a negative value.

Fixes: fe67c68 ("clk: milbeaut: convert from divider_round_rate() to divider_determine_rate()")
Signed-off-by: Brian Masney <bmasney@redhat.com>

Author: masneyb

drivers/clk/clk-milbeaut.c

@@ -398,13 +398,9 @@ static int m10v_clk_divider_determine_rate(struct clk_hw *hw,
 		val = readl(divider->reg) >> divider->shift;
 		val &= clk_div_mask(divider->width);
 
-		req->rate = divider_ro_round_rate(hw, req->rate,
-						  &req->best_parent_rate,
-						  divider->table,
-						  divider->width,
-						  divider->flags, val);
-
-		return 0;
+		return divider_ro_determine_rate(hw, req, divider->table,
+						 divider->width, divider->flags,
+						 val);
 	}
 
 	req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate,