vfio: remove spurious ampersand

As clang rightfully pointed out, the ampersand in front of this member
looks wrong.

Remove it so we actually really compare against the count being 0.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
1 file changed