btrfs: zoned: remove redundant assignment in btrfs_check_zoned_mode

Remove the redundant assignment to zone_info variable in
btrfs_check_zoned_mode function.
Reviewed-by: NJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: NPankaj Raghav <p.raghav@samsung.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/zoned.c

@@ -652,8 +652,7 @@ int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info)
 		if (model == BLK_ZONED_HM ||
 		    (model == BLK_ZONED_HA && incompat_zoned) ||
 		    (model == BLK_ZONED_NONE && incompat_zoned)) {
-			struct btrfs_zoned_device_info *zone_info =
-				device->zone_info;
+			struct btrfs_zoned_device_info *zone_info;
 
 			zone_info = device->zone_info;
 			zoned_devices++;