[PATCH-next] fs/btrfs: Fix uninitialized variable

[Khaled ROMDHANI]

The variable 'zone' is uninitialized which
introduce some build warning.

It is not always set or overwritten within
the function. So explicitly initialize it.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Khaled ROMDHANI <khaledromdhani216@xxxxxxxxx>
---
 fs/btrfs/zoned.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 432509f4b3ac..42f99b25127f 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -136,7 +136,7 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones,
  */
 static inline u32 sb_zone_number(int shift, int mirror)
 {
-	u64 zone;
+	u64 zone = 0;
 
 	ASSERT(mirror < BTRFS_SUPER_MIRROR_MAX);
 	switch (mirror) {

base-commit: c05b2a58c9ed11bd753f1e64695bd89da715fbaa
-- 
2.17.1