scsi: ufs: remove version check before IS reg clear

There is no need to check the version to clear
the interrupt status. And the order is changed
prior to actual handling.

Change-Id: Icc46b48ef4aefc9014259c0be6cb3f42ebe07f4f
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Tested-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Patch-mainline: linux-scsi@vger.kernel.org @ 05/19/2013, 13:51
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>