i2c: amd_mp2: handle num is 0 input for i2c_amd_xfer

clang static analyzer reports this problem

i2c-amd-mp2-plat.c:174:9: warning: Branch condition evaluates
  to a garbage value
        return err ? err : num;
               ^~~

err is not initialized, it depends on the being set in the
transfer loop which will not happen if num is 0.  Surveying
other master_xfer() implementations show all handle a 0 num.

Because returning 0 is expected, initialize err to 0.

Signed-off-by: Tom Rix <[email protected]>
Acked-by: Elie Morisse <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>

0 files changed, 0 insertions, 0 deletions