btrfs: fix lost return value due to variable shadowing

A block-local variable stores error code but btrfs_get_blocks_direct may
not return it in the end as there's a ret defined in the function scope.

CC: <stable@vger.kernel.org>	# 3.6+
Fixes: d187663ef24c ("Btrfs: lock extents as we map them in DIO")
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
(cherry picked from commit 1932b7be973b554ffe20a5bba6ffaed6fa995cdc)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8564d8ce03de6860745a03dd12cf13062f3b63e4..91a87f53be3c1d1498430d2ace956cfe6dcc737b 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7288,7 +7288,6 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock,
            ((BTRFS_I(inode)->flags & BTRFS_INODE_NODATACOW) &&
             em->block_start != EXTENT_MAP_HOLE)) {
                int type;
-               int ret;
                u64 block_start, orig_start, orig_block_len, ram_bytes;
 
                if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags))