[PATCH 1/2] slimbus: qcom-ctrl: fix a NULL test

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"retries" ends when it is set to -1 and not 0 so that part of the test
is wrong.  This bug would lead to a NULL dereference a couple lines
later.

Fixes: afbdcc7c384b ("slimbus: Add messaging APIs to slimbus framework")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
Should Greg be added to the MAINTAINERS file for this driver?

diff --git a/drivers/slimbus/qcom-ctrl.c b/drivers/slimbus/qcom-ctrl.c
index fb1a5e0eb8dd..3ab59209cbdc 100644
--- a/drivers/slimbus/qcom-ctrl.c
+++ b/drivers/slimbus/qcom-ctrl.c
@@ -345,7 +345,7 @@ static int qcom_xfer_msg(struct slim_controller *sctrl,
 		}
 	}
 
-	if (!retries && !pbuf)
+	if (!pbuf)
 		return -ENOMEM;
 
 	puc = (u8 *)pbuf;
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