[PATCH] fwctl/pds: propagate actual error code instead of hardcoded -ENOMEM

[Jackie Liu <liu.yun@linux.dev>]

From: Jackie Liu <liuyun01@kylinos.cn>

When pdsfc_get_operations() fails in pdsfc_validate_rpc(), the
function hardcodes the return value to -ENOMEM regardless of the
actual failure. pdsfc_get_operations() can return various errors
from the adminq command (e.g. -ETIMEDOUT, -EIO, -ENODEV) or from
DMA mapping failure (-ENOMEM). Propagate the actual error via
PTR_ERR(operations) so userspace and debugging tools see the correct
failure reason.

Fixes: 92c66ee829b9 ("pds_fwctl: add rpc and query support")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
---
 drivers/fwctl/pds/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/fwctl/pds/main.c b/drivers/fwctl/pds/main.c
index 68fe254dd10a..a4e80cfa3c50 100644
--- a/drivers/fwctl/pds/main.c
+++ b/drivers/fwctl/pds/main.c
@@ -325,7 +325,7 @@ static int pdsfc_validate_rpc(struct pdsfc_dev *pdsfc,
 						  rpc->in.ep);
 		if (IS_ERR(operations)) {
 			mutex_unlock(&ep_info->lock);
-			return -ENOMEM;
+			return PTR_ERR(operations);
 		}
 		ep_info->operations = operations;
 	}
-- 
2.54.0