octeontx2-af: debugfs: fix error return of allocations

Current memory failure code in the debugfs returns -ENOSPC. This is
normally used for indicating that there is no space left on the
device and is not applicable for memory allocation failures.
Replace this with -ENOMEM.
Signed-off-by: Niels Dossche <dossche.niels@gmail.com>
Link: https://lore.kernel.org/r/20220430194656.44357-1-dossche.niels@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c

@@ -248,7 +248,7 @@ static ssize_t rvu_dbg_lmtst_map_table_display(struct file *filp,
 
 	buf = kzalloc(buf_size, GFP_KERNEL);
 	if (!buf)
-		return -ENOSPC;
+		return -ENOMEM;
 
 	tbl_base = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_MAP_BASE);
 
@@ -407,7 +407,7 @@ static ssize_t rvu_dbg_rsrc_attach_status(struct file *filp,
 
 	buf = kzalloc(buf_size, GFP_KERNEL);
 	if (!buf)
-		return -ENOSPC;
+		return -ENOMEM;
 
 	/* Get the maximum width of a column */
 	lf_str_size = get_max_column_width(rvu);