[PATCH 4.19 27/95] fpga: machxo2-spi: Fix missing error code in machxo2_write_complete()

[Greg Kroah-Hartman]

From: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>

[ Upstream commit a1e4470823d99e75b596748086e120dea169ed3c ]

The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'ret'.

Eliminate the follow smatch warning:

drivers/fpga/machxo2-spi.c:341 machxo2_write_complete()
  warn: missing error code 'ret'.

[mdf@xxxxxxxxxx: Reworded commit message]
Fixes: 88fb3a002330 ("fpga: lattice machxo2: Add Lattice MachXO2 support")
Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
Signed-off-by: Moritz Fischer <mdf@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/fpga/machxo2-spi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/fpga/machxo2-spi.c b/drivers/fpga/machxo2-spi.c
index e3cbd7ff9dc9..fa76239f979b 100644
--- a/drivers/fpga/machxo2-spi.c
+++ b/drivers/fpga/machxo2-spi.c
@@ -334,6 +334,7 @@ static int machxo2_write_complete(struct fpga_manager *mgr,
 			break;
 		if (++refreshloop == MACHXO2_MAX_REFRESH_LOOP) {
 			machxo2_cleanup(mgr);
+			ret = -EINVAL;
 			goto fail;
 		}
 	} while (1);
-- 
2.33.0