net/mlx5: Add a blank line after declarations

To fix these checkpatch complaints:

WARNING: Missing a blank line after declarations
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/alloc.c

@@ -258,6 +258,7 @@ EXPORT_SYMBOL_GPL(mlx5_db_alloc);
 void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db)
 {
 	u32 db_per_page = PAGE_SIZE / cache_line_size();
+
 	mutex_lock(&dev->priv.pgdir_mutex);
 
 	__set_bit(db->index, db->u.pgdir->bitmap);

drivers/net/ethernet/mellanox/mlx5/core/eq.c

@@ -188,6 +188,7 @@ static enum mlx5_dev_event port_subtype_event(u8 subtype)
 static void eq_update_ci(struct mlx5_eq *eq, int arm)
 {
 	__be32 __iomem *addr = eq->doorbell + (arm ? 0 : 2);
+
 	u32 val = (eq->cons_index & 0xffffff) | (eq->eqn << 24);
 	__raw_writel((__force u32)cpu_to_be32(val), addr);
 	/* We still want ordering, just not swabbing, so add a barrier */