staging: exfat: fix uninitialized variable ret

Currently there are error return paths in ffsReadFile that
exit via lable err_out that return and uninitialized error
return in variable ret. Fix this by initializing ret to zero.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: c48c9f7ff32b ("staging: exfat: add exfat filesystem code to staging")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>,
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20190830184644.15590-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/exfat/exfat_super.c b/drivers/staging/exfat/exfat_super.c
index 15970b34e38f525b355e83f14895d3361ca84748..aaebd40ee6f37483fcaf01308eab69a78ad56319 100644 (file)
--- a/drivers/staging/exfat/exfat_super.c
+++ b/drivers/staging/exfat/exfat_super.c
@@ -779,7 +779,7 @@ static int ffsReadFile(struct inode *inode, struct file_id_t *fid, void *buffer,
 {
        s32 offset, sec_offset, clu_offset;
        u32 clu;
-       int ret;
+       int ret = 0;
        sector_t LogSector;
        u64 oneblkread, read_bytes;
        struct buffer_head *tmp_bh = NULL;