[PATCH 1/3] ram: rk3399: Fix .set_rate_index() error handling

[Lee Jones]

Functions pointed to by this op pointer can return non-zero values
indicating an error.  Ensure any error value is propagated back up the
call-chain.

Signed-off-by: Lee Jones <lee at kernel.org>
Tested-by: Xavier Drudis Ferran <xdrudis at tinet.cat>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
---
 drivers/ram/rockchip/sdram_rk3399.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index c0a06dcaed..0af0fa9e7b 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -3005,7 +3005,9 @@ static int sdram_init(struct dram_info *dram,
 	params->base.stride = calculate_stride(params);
 	dram_all_config(dram, params);
 
-	dram->ops->set_rate_index(dram, params);
+	ret = dram->ops->set_rate_index(dram, params);
+	if (ret)
+		return ret;
 
 	debug("Finish SDRAM initialization...\n");
 	return 0;
-- 
2.37.1.559.g78731f0fdb-goog