xfs: cleanup error handling in xfs_swap_extents

Use multiple lables for proper error unwinding and get rid of some now
superflous variables.

Signed-off-by: Josef 'Jeff' Sipek <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Tested-by: Christoph Hellwig <[email protected]>
Reviewed-by: Felix Blyakher <[email protected]>
1 file changed