[PATCH rdma-next] RDMA/mlx5: Silence the overflow warning while building offset mask

[Leon Romanovsky <leon@kernel.org>]

From: Leon Romanovsky <leonro@nvidia.com>

The coverity reports "Potentially overflowing expression ..." warning,
which is correct thing to complain from the compiler point of view, but
this is not possible in the current code.

Fixes: b045db62f6f6 ("RDMA/mlx5: Use ib_umem_find_best_pgoff() for SRQ")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/infiniband/hw/mlx5/mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c
index f8ec5156d8e9..844545064c9e 100644
--- a/drivers/infiniband/hw/mlx5/mem.c
+++ b/drivers/infiniband/hw/mlx5/mem.c
@@ -62,7 +62,7 @@ unsigned long __mlx5_umem_find_best_quantized_pgoff(
 	unsigned int page_offset_bits, u64 pgoff_bitmask, unsigned int scale,
 	unsigned int *page_offset_quantized)
 {
-	const u64 page_offset_mask = (1 << page_offset_bits) - 1;
+	const u64 page_offset_mask = (1UL << page_offset_bits) - 1;
 	unsigned long page_size;
 	u64 page_offset;
 
-- 
2.28.0