EDAC/altera: Set DDR and SDMMC interrupt mask before registration

EDAC/altera: Set DDR and SDMMC interrupt mask before registration

commit 6dbe3c5418c4368e824bff6ae4889257dd544892 upstream.

Mask DDR and SDMMC in probe function to avoid spurious interrupts before
registration.  Removed invalid register write to system manager.

Fixes: 1166fde93d5b ("EDAC, altera: Add Arria10 ECC memory init functions")
Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@altera.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@altera.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: stable@kernel.org
Link: https://lore.kernel.org/20250425142640.33125-3-matthew.gerlach@altera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>