RDMA/rxe: Cleanup mr_check_range

Remove blank lines and replace EFAULT by EINVAL when an invalid
mr type is used.

Link: https://lore.kernel.org/r/20230119235936.19728-2-rpearsonhpe@gmail.comSigned-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/sw/rxe/rxe_mr.c

@@ -26,8 +26,6 @@ u8 rxe_get_next_key(u32 last_key)
 
 int mr_check_range(struct rxe_mr *mr, u64 iova, size_t length)
 {
-
-
 	switch (mr->ibmr.type) {
 	case IB_MR_TYPE_DMA:
 		return 0;
@@ -41,7 +39,7 @@ int mr_check_range(struct rxe_mr *mr, u64 iova, size_t length)
 
 	default:
 		rxe_dbg_mr(mr, "type (%d) not supported\n", mr->ibmr.type);
-		return -EFAULT;
+		return -EINVAL;
 	}
 }