verity: remove checks for error states

All entries along the path must be either READY or VERIFIED as per
the contract with the caller. There is a BUG_ON which checks this.

BUG=9752
TEST=Ran tests in verity.git. Ran platform_DMVerityCorruption on H/W.

Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
kernel.git Review URL: http://codereview.chromium.org/6681004

TBRing. Code already LGTMed and committed to kernel.git.

Change-Id: Ib1af50ffd22a0a9063e947716fb478d690333ecc

TBR=wad@chromium.org,taysom@chromium.org,ups@chromium.org

Review URL: http://codereview.chromium.org/6705016
1 file changed