EDAC, mv64x60_edac: Fix an error code in probe()
EDAC, mv64x60_edac: Fix an error code in probe()

If edac_mc_add_mc() fails then we should preserve the error code, but
instead the current code returns success.

Signed-off-by: Dan Carpenter <ff341aa343d564f9e53e9dcb6996be8c04859a66@oracle.com>
Link: df14bb4e9d559847b88eae2bec2aa03f5b09ebd8@mwanda
Signed-off-by: Borislav Petkov <0691a664b24b6f15b20cd5aee64b72271db08be1@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs