[PATCH] mtd: mchp48l640: silence some uninitialized variable warnings

[Dan Carpenter <dan.carpenter@oracle.com>]

Smatch complains that zero length read/writes will lead to an
uninitalized return value.  I don't know if that's possible, but
it's nicer to return a zero literal anyway so let's do that.

Fixes: 88d125026753 ("mtd: devices: add support for microchip 48l640 EERAM")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
People, when we add a new driver can we make sure the first commit uses
the new prefered subsystem prefix?  For example,

"mtd: mchp48l640: add support for microchip 48l640 EERAM"
      ^^^^^^^^^^
Otherwise it's not clear to me what I should use as a patch prefix.

 drivers/mtd/devices/mchp48l640.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/devices/mchp48l640.c b/drivers/mtd/devices/mchp48l640.c
index efc2003bd13a..ad66b5aaf4e9 100644
--- a/drivers/mtd/devices/mchp48l640.c
+++ b/drivers/mtd/devices/mchp48l640.c
@@ -229,7 +229,7 @@ static int mchp48l640_write(struct mtd_info *mtd, loff_t to, size_t len,
 		woff += ws;
 	}
 
-	return ret;
+	return 0;
 }
 
 static int mchp48l640_read_page(struct mtd_info *mtd, loff_t from, size_t len,
@@ -286,7 +286,7 @@ static int mchp48l640_read(struct mtd_info *mtd, loff_t from, size_t len,
 		woff += ws;
 	}
 
-	return ret;
+	return 0;
 };
 
 static const struct mchp48_caps mchp48l640_caps = {
-- 
2.30.2