rdma/siw: Use proper enumerated type in map_cqe_status

clang warns several times:

drivers/infiniband/sw/siw/siw_cq.c:31:4: warning: implicit conversion
from enumeration type 'enum siw_wc_status' to different enumeration type
'enum siw_opcode' [-Wenum-conversion]
        { SIW_WC_SUCCESS, IB_WC_SUCCESS },
        ~ ^~~~~~~~~~~~~~

Fixes: b0fff731 ("rdma/siw: completion queue methods")
Link: https://github.com/ClangBuiltLinux/linux/issues/596Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/sw/siw/siw_cq.c

@@ -25,7 +25,7 @@ static int map_wc_opcode[SIW_NUM_OPCODES] = {
 };
 
 static struct {
-	enum siw_opcode siw;
+	enum siw_wc_status siw;
 	enum ib_wc_status ib;
 } map_cqe_status[SIW_NUM_WC_STATUS] = {
 	{ SIW_WC_SUCCESS, IB_WC_SUCCESS },