mlx4_core: Error message on mtt allocation failure

Add error message if mlx4_mtt_init fails to allocate mtts.

Signed-off-by: Marcel Apfelbaum <[email protected]>
Reviewed-by: Jack Morgenstein <[email protected]>
Signed-off-by: Vladimir Sokolovsky <[email protected]>
(Ported from Mellanox OFED 2.4)

Signed-off-by: Mukesh Kacker <[email protected]>

Orabug: 27510506

(cherry picked from commit bd2177d)
cherry-pick-repo=linux-uek.git

Signed-off-by: Qing Huang <[email protected]>
Signed-off-by: Aron Silverton <[email protected]>
Signed-off-by: Somasundaram Krishnasamy <[email protected]>

Orabug: 31620954

UEK5 => UEK6

(cherry picked from commit bcdd823)
cherry-pick-repo=UEK/production/linux-uek.git
unmodified-from-upstream: bcdd823

Signed-off-by: Qing Huang <[email protected]>
Reviewed-by: Sharath Srinivasan <[email protected]>
Signed-off-by: Aron Silverton <[email protected]>

Orabug: 31620955

UEK6 => LUCI

(cherry picked from commit cfe78a5)
cherry-pick-repo=UEK/production/linux-uek.git
unmodified-from-upstream: cfe78a5

Signed-off-by: Sharath Srinivasan <[email protected]>
Reviewed-by: Sharon Liu <[email protected]>
Signed-off-by: Aron Silverton <[email protected]

Author: Marcel Apfelbaum

drivers/net/ethernet/mellanox/mlx4/mr.c

@@ -207,8 +207,13 @@ int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift,
 		++mtt->order;
 
 	mtt->offset = mlx4_alloc_mtt_range(dev, mtt->order);
-	if (mtt->offset == -1)
+	if (mtt->offset == -1) {
+#ifndef WITHOUT_ORACLE_EXTENSIONS
+		mlx4_err(dev, "Failed to allocate mtts for %d pages(order %d)\n",
+			 npages, mtt->order);
+#endif /* !WITHOUT_ORACLE_EXTENSIONS */
 		return -ENOMEM;
+	}
 
 	return 0;
 }