system/physmem: remove redundant arg reassignment

Arguments `ram_block` are reassigned to local declarations `block`
without further use. Remove re-assignment to reduce noise.

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
1 file changed