clk: si5341: fix an error code problem in si5341_output_clk_set_rate

[ Upstream commit 5607068a ]

regmap_bulk_write() return zero or negative error code, return the value
of regmap_bulk_write() rather than '0'.

Fixes: 3044a860

 ("clk: Add Si5341/Si5340 driver")
Acked-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Su Hui <suhui@nfschina.com>
Link: https://lore.kernel.org/r/20231101031633.996124-1-suhui@nfschina.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>