[PATCH] uio: fix error return code in uio_dev_add_attributes()

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>

Fix to return -ENOMEM in the kobject_create_and_add() and kzalloc() error
handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
---
 drivers/uio/uio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index b645c47..c6dfc31 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -276,6 +276,7 @@ static int uio_dev_add_attributes(struct uio_device *idev)
 		mem = &idev->info->mem[mi];
 		if (mem->size == 0)
 			break;
+		ret = -ENOMEM;
 		if (!map_found) {
 			map_found = 1;
 			idev->map_dir = kobject_create_and_add("maps",
@@ -301,6 +302,7 @@ static int uio_dev_add_attributes(struct uio_device *idev)
 		port = &idev->info->port[pi];
 		if (port->size == 0)
 			break;
+		ret = -ENOMEM;
 		if (!portio_found) {
 			portio_found = 1;
 			idev->portio_dir = kobject_create_and_add("portio",

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