[PATCH] ublk_drv: initialize ret variable

[Tom Rix]

clang build fails with
drivers/block/ublk_drv.c:1304:6: error: variable 'ret' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]

When the call to ublk_get_device_from_id() fails, ret is used without being
initized.  So initialize.

Fixes: 71f28f3136af ("ublk_drv: add io_uring based userspace block driver")
Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
---
 drivers/block/ublk_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 52fd0af8a4f2..4d1199c98026 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1298,7 +1298,7 @@ static int ublk_ctrl_get_queue_affinity(struct io_uring_cmd *cmd)
 	struct ublk_device *ub;
 	unsigned long queue;
 	unsigned int retlen;
-	int ret;
+	int ret = -ENODEV;
 
 	ub = ublk_get_device_from_id(header->dev_id);
 	if (!ub)
-- 
2.27.0