drm/amd/display: Use kcalloc() instead of kzalloc()

We are trying to get rid of all multiplications from allocation
functions to prevent integer overflows. Here the multiplication is
obviously safe, but using kcalloc() is more appropriate and improves
readability. This patch has no effect on runtime behavior.

Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments
Link: https://github.com/KSPP/linux/issues/162Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Lenko Donchev <lenko.donchev@gmail.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/link/protocols/link_dpcd.c

@@ -164,7 +164,7 @@ static void dpcd_extend_address_range(
 	if (new_addr_range.start != in_address || new_addr_range.end != end_address) {
 		*out_address = new_addr_range.start;
 		*out_size = ADDRESS_RANGE_SIZE(new_addr_range.start, new_addr_range.end);
-		*out_data = kzalloc(*out_size * sizeof(**out_data), GFP_KERNEL);
+		*out_data = kcalloc(*out_size, sizeof(**out_data), GFP_KERNEL);
 	}
 }