netfilter: nf_tables: Use 32 bit addressing register from nft_type_to_reg()

nft_type_to_reg() needs to return the register in the new 32 bit addressing,
otherwise we hit EINVAL when using mappings.

Fixes: 49499c3e ("netfilter: nf_tables: switch registers to 32 bit addressing")
Reported-by: NAndreas Schultz <aschultz@tpip.net>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

include/net/netfilter/nf_tables.h

@@ -125,7 +125,7 @@ static inline enum nft_data_types nft_dreg_to_type(enum nft_registers reg)
 
 static inline enum nft_registers nft_type_to_reg(enum nft_data_types type)
 {
-	return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1;
+	return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1 * NFT_REG_SIZE / NFT_REG32_SIZE;
 }
 
 unsigned int nft_parse_register(const struct nlattr *attr);