MAINTAINERS: Fix Max's and Shravan's emails

Max's and Shravan's usernames were changed while @mellanox.com emails
were transferred to be @nvidia.com.

Fixes: f6da70d99c96 ("MAINTAINERS: Update Mellanox and Cumulus Network addresses to new domain")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 0d0862b..d746519 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6180,7 +6180,7 @@
 F:	drivers/edac/aspeed_edac.c
 
 EDAC-BLUEFIELD
-M:	Shravan Kumar Ramani <sramani@nvidia.com>
+M:	Shravan Kumar Ramani <shravankr@nvidia.com>
 S:	Supported
 F:	drivers/edac/bluefield_edac.c
 
@@ -9251,7 +9251,7 @@
 
 ISCSI EXTENSIONS FOR RDMA (ISER) INITIATOR
 M:	Sagi Grimberg <sagi@grimberg.me>
-M:	Max Gurtovoy <maxg@nvidia.com>
+M:	Max Gurtovoy <mgurtovoy@nvidia.com>
 L:	linux-rdma@vger.kernel.org
 S:	Supported
 W:	http://www.openfabrics.org